Posts by tag: Two Stroke

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We have 15 years of archives. Please note that posts over a year old may have been updated to point to similar bikes available to bid on eBay.
Honda January 20, 2021 posted by

Fun Factor – 1990 Honda NSR250R

Short days turn thoughts to a light winter project that might actually be completed by riding season.  Re-commissioning a later NSR250R would have a substantial reward at the end of that rainbow.

1990 Honda NSR250R for sale on eBay

Honda packed a multitude of updates into the 1990 MC21, though the little V-twin was stuck with 45 hp, the PGM-III ignition also controlled the RC power valve.  The 1990 chassis was a much beefier extrusion, and the gull-arm’s asymmetry allowed an expansion chamber to scoot underneath.  A kick starter was still how you got going, but the new wheels were both 17’s.  The fairing had just a few additional vents and scoops,  while keeping the weight with half a tank just a hair over 300 lbs.  Factory expansion chambers mean you’d never spot one here without a kmh speedometer.

This Colorado example has been stored for a while, and amassed 28,111 kms or 17,467 miles.  Maybe a knowledgeable reader can chime in on the livery and RR-ness, since most of my references show the Repsol scheme to use a teal backround applied to later model SP’s.  Either way the paint does look sharp except for where the tank got bonked, and maybe the rear wheel was victim of a failed brake caliper.  The Washington tag leads me to believe this bike was on RSBFS back in 2013, in a sales compendium viewable – here –.   And just a note from the eBay auction:

1990 Honda NSR250RR with Repsol livery.

Winterized 5 years ago, has been sitting covered in a shop since.

The NSR250R made it easy for rest-of-world riders to have a ball without a second mortgage, and the PGM-III top speed regulator was easily defeated.  This one looks like a great project, new expendables plus a couple of things sent to the paint shop and the new owner will be ready for spring.  Bidding is active but there are a couple of days left to check it over and get in there !

-donn

 

Fun Factor – 1990 Honda NSR250R
Yamaha December 23, 2020 posted by

Almost Famous: 1985 Yamaha RZ350

How much does star power help with motorsport sales? It helps if the figure connected with the sale is related to the vehicle in question. And in the case of the RZ350, the connection is very, very good. Sporting the signature of “King” Kenny Roberts, the RZ350 came emblazoned with the bumble bee livery that made Yamaha famous on the race track. As the last factory two stroke to be imported into all 50 US States, the RZ350 is held near and dear as a truly special bike from a bygone era.

1985 Yamaha RZ350 for sale on eBay

For those that have been living in a cave without AOL dial-up, let’s go over the basics: Take the spiritual heart of a RD350/RD400 – namely the two stroke parallel twin – and throw go-fast technology at it in the form of liquid cooling and a computer-adjustable exhaust port that enhances the typically peaky two-stroke power curve (YPVS). For those that like to breathe, the RZ came with an exhaust system that incorporated catalytic converters and air injection to prevent mosquito fogging the street/canyon/track with bllue smoke where these bikes played. The rest of the gear was fairly conventional, including a mild-steel frame, a single shock rear suspension system and triple disk brakes.

From the seller:
1985 Yamaha RZ 350 Kenny Robert’s edition. The most desirable year of the most desirable color combination Yamaha RZ 350. Very low original 6809 miles. Runs well, idles perfectly, fires up first kick. Stock oil injection system remains intact. Stock carbs, rejeted for the Toomy pipes and 2 into 1 K&N air filter. It is stock bore with new high performance pistons. I pulled the top end just to inspect and check everything, replaced the pistons because I had an extra set.

This bike came from The American Pickers in LeClaire, Iowa and was on of their shows. It was purchased locally by a motorcycle collector, and I purchased it from them. I have the bill of sale from Iowa.

The bike is in over all in decent rider quality condition, it has the normal nicks and dings as it is a 35 year old motorcycle. This bike would be a great candidate for an easy restoration or enjoy as is.

Like most RZs, this particular example has shed it’s restrictive, heavy catalytic converters in favor of some old-school expansion chambers. That is one way to really wake up an RZ. The air filter mod – in conjunction with the exhaust swap – requires changes to jetting, since the motor is now able to flow more air. Racers usually disabled the oil injection system in favor of mixing oil right into the gas (again, old-school), but street riders will appreciate the ability to fill up the tank without the use of a mix-rite cup.

This particular bike was apparently featured on the TV show “American Pickers.” I’m not really sure if that adds any value, but does prove that many people think the RZ is cool. Pictures show a bike in pretty good condition. This is not a meticulously spotless museum piece by any means, but nor is it a thrashed, crashed and trashed example asking for an outrageous price. With no reserve and a single bid at time of writing, this RZ is in the $6,500 zone – which is close to where you might expect. There are a significant number of folks watching on, though, so you might see some last minute activity on this auction. Check out all of the details here, stay safe and good luck!!

MI

Almost Famous: 1985 Yamaha RZ350
Aprilia December 19, 2020 posted by

Dealer’s Choice: 2001 Aprilia RS250 for Sale

There’s nothing wrong with knowing your strengths, and Aprilia certainly knew theirs then stuck to them when they created the RS250. They crafted the gorgeous aluminum beam frame, swingarm, and the curvaceous bodywork, but left development of the engine to an outside party. That’s right, this little bit of flyweight Italian exotica is powered by a Suzuki two-stroke v-twin from the RGV250Γ. Hey, outsourcing engines worked for DeTomaso, Iso, Bizzarrini, and half the British sportscar manufacturers of the 60s and 70s…

Originally introduced in 1995, this bike wears the second-generation styling introduced in 1998. One of the few quarter-liter two-strokes officially available outside Japan, the RS250 also remained in production much longer: Yamaha TZR250 production ended in 1995, Honda’s NSR250R in 1996, and the Suzuki RGV250Γ held out until 1998. The bike was on par with those machines, with excellent handling and superlative brakes: the exact same triple Brembo setup was the same as the one found on the much heavier Ducati 916.

You’d be forgiven for thinking Aprilia worked some magic and breathed on the little v-twin: there is some “Aprilia” branding cast into a number of engine components, and the RS250’s claimed 70hp suggests a much higher state of tune than the donor Suzuki’s paltry 45hp. But there are a couple simple reasons for that: those Italian horses are probably a bit optimistic and measured at the crank, while Japanese market regulations required that bikes in the class produce a maximum of 45hp. Many probably made at least that at the wheel, and all could be tuned to make much more “for offroad use only.”

The very clean and thoroughly photographed example is being offered by a Las Vegas motorcycle dealership. So tell me: do you feel lucky? Well do ya, punk? I realize I’m mixing my Vegas references with my Harry Callahan, but you’re definitely gambling a bit with this example. I understand that dealers may not know all that much about the bikes they’re selling, but it’d be nice if they at least went through the motions: this listing includes nothing other than the dealership’s boilerplate legalese, and can be found here: 2001 Aprilia RS250 for Sale.

This particular RS250 appears stock, except for the carbon/kevlar-weave mufflers, although I’d personally hold out for one of the earlier Loris Reggiani replicas if I were in the market for an Aprilia. So what will it take to put this 15,404 mile bike with no indicated history in your garage? Well the dealer is asking $14,995 for it. Aprilia RS250 prices have continued to climb steadily in recent years, but that seems pretty steep. Luckily, I’m sure our commenters will chime in below and let me know.

-tad

Dealer’s Choice: 2001 Aprilia RS250 for Sale
Aprilia December 17, 2020 posted by

50 Shades of Smoke: 2000 Aprilia RS50

This time of year it is common for RSBFS to refer to little scooters as stocking stuffers. But this particular tiddler – an Aprilia RS50 – has already been stuffed full of 77cc goodness. That should certainly up the power ante beyond the estimated 8 ponies of the stocker, and allow this 216 lbs (dry) chainsaw on two wheels to reach a speeding violation in no time flat. Note that the dyno sheet does not appear to be this bike, but rather the output from a motor with the 77cc conversion (along with many other accessories which may not be on this bike).

2000 Aprilia RS50 for sale on eBay

Based around a 49.7cc aluminum single cylinder featuring liquid cooling and reed valve induction, the Aprilia RS50 mill is actually produced by Italian firm Motori-Minarelli (2006 and later models are powered by Derbi units). And unlike some of the more pedestrian scooter-peds available, the RS50 was quite adult sized and had decent components. From full fairing that mimics the RS250 bike, the RS50 included 17 inch wheels (110 front, 130 rear), and a 300 mm single disc up front. Aprilia even included a passenger pillion and pegs – although I don’t know many that would two-up something of this size.

From the seller:
Stage 6 bore kit 77cc ,installed at 3k miles,d.i.d. chain sprocket conversion,full exhaust,upgraded rear adjustable shock.New tires Have all receipts paper work. Bike has amazing power band. Very reliable, exotic sound. I have all the old parts in box ,very fun ride.

I don’t know why nearly every RS50 I have seen includes custom rash on one side or the other (or both). Perhaps it is a testament to how confidence inspiring the handling is, suckering you deeper and deeper into corners until traction cries uncle. Perhaps it is simply the nature of small-bore, two stroke power than demands high corner entry speeds. Maybe it is simply because these smaller bikes have been hooned by youngsters who simply don’t know better. Regardless this bike has been artfully enhanced by a horizontal cornering move that likely left similar scars on the rider. Small bikes are a blast to ride, and they are also cheap to buy and own. This one has some decent upgrades in addition to the graphical customization, and is listed for a pretty strong $2,900 USD with zero bids thus far. That might be a bit high to open the auction, and thus the lack of response. There are several days remaining, so check out all of the detail here, stay safe and good luck!!

MI

50 Shades of Smoke: 2000 Aprilia RS50
Yamaha December 14, 2020 posted by

Featured Listing: 1979 Yamaha RD400F Daytona Special

Update 12.14.2020: This bike has SOLD! Congratulations to buyer and seller! -dc

Before race bikes had to have fairings, custom suspension, and forged rearsets, they looked a lot like streetbikes with number plates, and the 1979 Yamaha RD400F Daytona was among the best. Lighter by half than most of the 750cc and 1,000cc superbikes of the time, the RD could run inside outside and around just about any of its peers. Usually, that means you sacrifice something in acceleration or top speed, but the RD’s parallel-twin 400cc two-stroke mill damn near made up for that.

With ~43 horsepower to push around just 365 pounds, the little RDs were darlings on the street, too. Their modern equivalent is probably something like the Yamaha FZ07, practical, lithe, fast enough to scare you and still accessible enough for a commuter.

This 1979 RD400F Daytona is a beautiful example of the brand, in the classic red/white/gold livery. It’s not perfect, but it isn’t that far off. It’s easily nice enough to put on a stand in your basement and stare at, but I wouldn’t be scared to take it out for a few nice weekend rides, either.

From the seller:

Canadian model 1979 RD400 F Daytona Special sold for only 1 year.
Bike is all original stock.
Low 8100 Miles.
Starts, runs and rides amazing for a 40 year old bike, no issues.
Numbers matching. Low number #403
Matching locks for all 3 – tank, ignition, and seat.
Rust free gas tank, no liner, truly in great shape inside.
Bodywork and paint in very nice shape,
Side covers in great shape very clean no brakes.
All electrical working and no cuts or repairs to wiring loom.
All chrome in great shape including the forks are clean no pits or rust, and gas cap.
Has tool OEM kit.
Things to note the Canadian model received a different crank, electronic ignition, as well as separate carbs similar to the earlier model (that doesn’t have the goofy carb tops and rubber accordion boots that came with the mechanical synchronizing system. Other changes from US model is the exhaust pipes, and have larger diameter for the header and inlet to the exhaust cigar pipes. The Canadian exhaust system also don’t have the butterfly valve.
Huge list of work done including,
Full tune up,
Carburetors just meticulously overhauled.
All work done by red seal mechanic.
140 PSI compression left and right cylinders. Can’t get better than that!!
Many fresh 0km OEM parts.
New air filter.
New spark plugs.
New neutral switch seal.
New shift shaft seal.
New clutch push rod seal.
New seat cover.
New fuel tank rear mounting rubbers.
Petcock rebuilt with new parts.
New exhaust pipe rubber joint gasket.
New black rubber fuel lines.
Fresh Motul trans oil.
Rear brake caliper rebuilt
Fresh brake pads, front and rear.
Bike roles very freely when brakes release.
1 season old battery.
Low km chain and sprockets.
Low km tires.
Probably more just can’t think of it at the moment. many months of love, sweet and work has gone into freshening up this nice original Daytona Special
I would rate this bike as a solid 8.5 out of 10.
Small deficiencies;
1 handle bar mounting bolt is not a match.
Black paint on wheels is starting to fade. comes back nice and black with a little mag product and work.
Front brake is a bit spongy from 40 year old rubber line, looks great, no cracks or splits just flexes more than I like. Yes I’m that picky.
Small marks on fuel tank.
Headlight ears have the dreaded RD400 creases.
Scratches and small weld repair on right exhaust pipe near passenger peg.
Tail fairing underside around mounting bolts has a small piece missing, can not be seen from outside.

Asking price is $7,500$6,995 US
Location: Vancouver, Canada

This one is a Canadian model, which means it’s a little harder edged than the versions we got in the U.S. At $7,500 $6,995, it’s not exactly a bargain basement collector’s piece, but it’s definitely one you should want to own.

Featured Listing: 1979 Yamaha RD400F Daytona Special
Yamaha November 27, 2020 posted by

Been There Done That – 1985 Yamaha RZ350 with Just 1,972 Miles !

Introduced in 1982 as the closest thing to a race bike on the road, and certainly one of the last two-stroke street bikes available here, Yamaha’s RZ350 can be found in all prices and conditions.  With its sights set on the top of the hill, this later Fla. example has impossibly low miles and almost flawless condition.

1985 Yamaha RZ350 for sale on eBay

The early -80’s brought the Yamaha Power Valve System to their two-strokes, and it helps the engine run just fine around town.  But the 55 rated horsepower are available up at 9,000 rpm, requiring a more advanced set of rider skills.  Racey looks are helped by the perimeter frame and drop-in fuel tank, just like real racers of the day.  Dual front disks were new on a lighter-weight machine, and compensate for the lack of engine deceleration on a smoker.  Suspension wasn’t fancy, just preload adjustable but good quality like the rest of the build, and the gold-trimmed alloys had a light look.

An expert might be required to find something to quibble about on this RZ, and you’d suspect an odometer rollback if not for the museum condition.  Factory pipes look sharp and dispense with the catalyzer.  Comments from the eBay  auction:

Kenny Roberts Edition purchased from original owner earlier this year. Great condition very little patina  two small little touched up chips one on tank and fairing smaller then pencil eraser in front of gas cap the blue stripe is starting to shrink I don’t know if its from gas or what but that’s the only complaint I have with the bike because the rest of it is killer front forks are clean with very minimal rash the rims and controls are in great shape and look awesome. I have original pipes and tool kit look at the pics they tell the story look at them well please ask any questions or more pic’s if needed and the bike runs great . Miles are 1975 and the bike is all original not restored and shows extremely well for a 35 year old bike that hasn’t been monkeyed with and adult owned and cared for.

Like real estate, they’re just not making any more RZ350’s, so this owner can wait until his whopping buy-it-now seems sensible or someone makes an offer.  Not sure this year is CARB legal even with the original exhaust, but a knowledgeable reader will likely sing out.  The alternate livery doesn’t scream Kenny Roberts like the yellow, but it’s there.  You can usually hear me groan about bikes destined for the carpet, but this one is really too nice for anything but an occasional spin around the block.

-donn

Been There Done That – 1985 Yamaha RZ350 with Just 1,972 Miles !
Suzuki November 19, 2020 posted by

Loose Cannon – 1986 Suzuki RG500 Gamma

Almost ten years after developing their RG Γ 500 Moto GP bike, Suzuki introduced the road-going version, and even with required street equipment the performance was beyond the norms.  Like this one, many were imported on the left coast, but not all have had such careful stewardship over the years.

1986 Suzuki RG500 Gamma for sale on eBay

The Gamma shared engine dimensions with the race machine, but had a shock damper between the twin crankshafts and the clutch, and claimed “just” 95 hp ( racers were estimated at 120 hp ).  A factory cassette gearbox is fitted, allowing at least a theoretical quick change of ratios.  Two strokes of the time used moving exhaust ports to stretch the power band down to 5,000 rpm, and the RG’s are controlled by the Suzuki Automatic Exhaust Control system, in concert with the ignition.  Anti-dive forks and Full Floater monoshock took care of the staggered 16-inch front and 17-inch rear wheels.

With just enough photos to wet a buyer’s whistle, the owner can expect a message and visit from any really interested party.  Still this RG looks very stock and undamaged, with mostly nice finishes left on the alloys and paint.  Hyperbolic comments and specs ( reviewed top speed 147 mph, wet weight 386 lbs. ) from the eBay auction:

Street legal MOTO GP bike from the 2 stroke good old days!!  Legally registered in the state of Washington (now with collector plate) and was registered in Oregon.  BONE STOCK with just less than 19,667 kilometers on the speed-o (12,220 miles).  This is a 200 MPH insane 250 lbs. Rocket!!  that I just can’t seem to open up in my area of WA (too many cops).  So my baby just sits in a heated garage/shop.  Bike has ALWAYS been in a garage, and never used in bad weather!!  My loss your gain – first $37,500 gets it!!  Also comes with some extra parts to update it, if you so desire. Katana wheels, modern swing-arm, passenger seat, extra forks, NEW euro front turn signals, shop manual, and some other bits and bobs.

The RG500 had a limited market, was expensive to put together, and up against the new GSX-R’s – so in hindsight its green/white/checker run was no surprise.  In contrast, the racing RG and subsequent RGV-500 had a ten year run on the circuit.  Total production was under 10,000 units, but its only North American import was north of the border, so it’s a rare sighting here.  More study is required at this sort of ante, but the owner seems open to offers.

-donn

Loose Cannon – 1986 Suzuki RG500 Gamma
Yamaha November 3, 2020 posted by

Featured Listing: 1974 Yamaha TZ750 Racer!

Update 7.10.2021: This bike has SOLD! Congratulations to buyer and seller! -dc

When it comes to bikes that have made their mark on history, few can stack up with the Yamaha TZ750. A winning GP factory racer built for the Formula 750 class, the TZ750 was remarkable in its adaptability; from dominating Daytona, to winning the Isle of Man TT, to being converted into a dirt tracker of sorts, the mighty TZ sent a message to the world that to win you needed to be on a Yamaha. And far from the factory-only efforts of today, the TZ750 was available as a customer race bike. Show up to your local dealer with references and some cash, and factory speed and power was in your hands. Today’s 1974 example of the TZ750 is just such a privateer bike, and includes some interesting history and a trip to Daytona as some of the stories it has to tell. This Featured Listing is an amazing part of our motorcycling past, and can be raced in historics, parked in your man cave museum as artwork, or even ridden on the street (!). The sheer volume of quality pictures should say enough, but read on about this labor of love.

Featured Listing: 1974 Yamaha TZ750 Racer!

From the seller:
This is a 1974 Yamaha TZ750A, with true 750cc D-model cylinders. It was purchased by the current owners in 2015 from the previous (2nd) owner who had it since 1979. It was raced at the 1975 Daytona 200 by the original owner Doug Libby (from Michigan). We have been in touch with him, and he confirms that he did race this bike there, finishing mid-pack (pictures of Doug on this bike below).

The bike will come in the original race trim, as seen in the pictures with the flat-side open pipes and the #1 bodywork. The TZ also comes with a rare, clear Nevada Title so that it can be ridden on the street. We have the street trim equipment available to the buyer which can be negotiated separately, and includes the street exhaust (Swarbrick pipes built by Rusty Bigley), extra bodywork #40 (AirTech), kickstand, and electronics (headlight, taillight, license plate holder, turn signals, cooling fans and battery). All street parts were all installed with a “do-no-harm” mentality. Nothing was drilled or damaged to the bike in any way and parts can be added/removed as if they were never there. Both sets of bodywork have been professionally painted with automotive grade paint and clear coat over the pinstripes/color. The stickers are over the clear and can be removed by new owner.

First-year TZ750’s are very rare and we know of fewer than 10 in the United States and most of those are in museums. Ours also comes with a clear Nevada title and is the only twin-shock TZ that is street legal that we know of in the United States. Historically there may only be 3 or 4 TZ’s of any generation that were titled in the United States for the street.

More from the seller:
The bike went through a full restoration about 10 years ago by the previous owner. It has run 2-3 hours since 2015, when we purchased it. The previous owner stated that he inspected the engine for wear and compression and all is within spec, we have done a borescope inspection on cylinders and gearbox with no concerns found. Some of the fasteners i.e., bolts, washers, etc are non-factory Yamaha. It is always stored inside our home. A new set of Mikuni carburetors are installed that have idle screws (originals did not have them, making it hard to idle at a stop sign). The original 409 carbs will come with the bike and are in excellent condition however, they were all drilled for idle screws by the previous owner (see photo), as such the drill holes would need to be sealed to return them to original condition. Also, a new aftermarket radiator has been installed and the original is preserved and comes with the bike. Finally, a set of mid-80’s Michelin slicks will come with the bike if someone wants to make it truly period-correct for show. The slicks are not showing cracking but are only good for static display (due to age). The engine case does not come stamped with a serial number, indicating it was a factory replacement. The frame # is: 409000177 meaning it was the 76th TZ750 built in 1974.

For reference, we attended the Mecum motorcycle auction in Las Vegas in January 2020 where another first year TZ sold for $60k plus $6k premium for a total of $66k. That machine wasn’t even close to the quality ours is. It was missing various parts, and the finish was subpar at best. We constantly keep track of TZ750s that are for sale and only one or two per year come on the market. Most have not been restored or require significant time/money investment to become ridable. Ours is a ready to ride, race, or show either on the track or on the street.

Asking price: $65,000 USD

More from the seller:
The street gear can be negotiated as part of the sale. The original flat-side “open” pipes will come with the bike in race/original trim. We also have significant spares that can be negotiated as we have another CMR chassis TZ750 that we are building to race. We are located in Las Vegas, Nevada, and can assist with shipping or transporting, depending on the situation and location of the buyer.

All of the pictures and videos posted in this ad were taken on 10/31/2020 (except for the vintage pictures, of course). We have put comments on the pictures to make it clear what comes with the bike. We took photos of all the parts available and made comments on each photo stating which come with the bike and which are negotiable.

A bike this magnificent needs to be seen in motion to truly appreciate the visceral elements of the breed. Check out this video of the bike running (in full race trim), and tell me that the sound does not send chills up and down your spine!

How do you like this view from the office? Not many riders have had occasion to enjoy this particular view, but the lucky buyer can chose what they see through the bubble: the racetrack, the canyons, or the man cave!

Another video provided by the seller shows this incredible TZ750 sporting street trim. That’s right. Forget all about those “GP Replica Racers” such as the RG500 Gamma or RZ500 – how about an *actual* race bike on the street? Where do I sign?! Once again, the sound is glorious – and I could only imagine how this would feel on my morning commute:

The TZ750 went through several iterations over the span of years, including frame updates (and a change to single shock rear suspension) and motor mods that greatly increased horsepower. Weight was also marginally reduced over the years. But like all racers, these privateer machines were generally used hard and funds were not always available to put them back together again. Many were crashed – hard. Others were destructively modified as rule books changed and teams struggled to keep older bikes competitive. Surviving racers in this kind of condition are a rare gift; we do not see them often because they did not live in a collector world. With a comprehensive restoration behind it, tons of documentation and photos, and the rarity of being a first-year, twin shock bike, this 1974 Yamaha TZ750 is sure to drive a lot of interest. Serious parties should contact father and son team Jerall & John Lawrence for questions or negotiations. At $65k USD, this bike is priced right in line with the market, and has plenty to offer in terms of history and potential add-ons. Good Luck!!

MI

Featured Listing: 1974 Yamaha TZ750 Racer!