Posts by tag: Two Stroke

Yamaha May 18, 2022 posted by

Hive Mentality – 1984 Yamaha RZ350

With spring in full swing and summer right around the corner RZ350s are popping up like, well, weeds. Scare in quality and quantity, 2022 has brought out a spate of strong contenders; bikes that present as well as any we have seen. So too is today’s find, a 1984 bumble bee 350 out of Montana that looks fantastic.

1984 Yamaha RZ350 for sale on eBay

Needing no introduction – but getting one anyway – the RZ350 was the last gasp of two-stroke street bike goodness in the early 1980s. Festooned with YVPS, oil injection, catalytic converters and EVAP canisters, the RZ was as close as EPA legal as could be with 1984 technology. Significantly choked by the emissions equipment (which was also very, very heavy), most RZs enjoyed a life on steroids – dropping the cats for a pair of expansion chambers, new fatter jets and improved upstream airflow. The RZ350 was an over achiever, running with the 550cc middleweights of the day, and were popular club racers to boot. Today, these are hard to find in many parts of the country, and harder still to find in original – or close to original – condition.

From the seller:
I am slimming down my collection, so its time for this time capsule to go. I purchased this 1984 RZ350 from the original owner in 2010. Its been in my garage ever since, in dry Montana, so there is very little corrosion. It has 3,714 original miles. I will also include the original exhaust pipes (photos coming soon). Overall, the bike is in very, very good condition for its age. Its not pristine, but very nice! The tires are old, so they are due for replacement and the brakes could probably be bled. There are a couple stickers on one of the fork tubes that can be removed.

More from the seller:
The original owner installed Spec II exhaust pipes. The airbox and intake are stock. It has steel braided brake lines on the front, and a Telefix fork brace.

There is no evidence of the bike ever being down. The seat is perfect. The gas tank has no dents and is very near perfect. It starts from cold on the first kick and idles perfectly.

I have a clean and clear Montana title.

The seller has also shared a cold start video on this bike:

RZs are worth real money these days. You can forget when you could pick up a beater for a grand or less; there is no value in lamenting the great one you sold for $2k. This is the ups and downs of the market, and while the RZ has had its unfair share of downs, it is currently on a credible upswing. The bidding on this very clean bike with period correct aftermarket add-ons (with original pipes available!) is well over $10k with a lot of interest. The reserve is still in place, so there is likely a lot more to play for. Only 3,700 miles on this time capsule, meaning that the winning bidder will have a lightly used rider that shows as well as any we’ve seen. Check out all of the details here, and Good Luck!!

MI

Hive Mentality – 1984 Yamaha RZ350
Yamaha May 13, 2022 posted by

The Same, But Different: 1984 Yamaha RZ350

In an earlier post, RSBFS Staff Writer Donn notes: Hardly a week goes by that a new RZ350 doesn’t pop up these days! I would like to take this opportunity to upgrade that statement considerably. Because today we have a double RZ350 Friday (take two – they’re small)! Forget Friday the 13th. This is Friday the RZ350th!

1984 Yamaha RZ350 for sale on eBay

This particular RZ shows very differently than the 1985 model posted by Donn HERE. This RZ seems to have a bit less info, and a potentially greater number of unknowns. It is clear that it has experienced some modifications along the line, from Airtech bodywork to updated expansion chambers, bar end mirrors, a complete replacement top end (with YPVS delete), and what appears to be some minor rash on the right-hand side case. But it is a RZ after all – and remains very popular with readers and riders alike. There are pristine, museum-style offerings that go for big, big bucks, ridden and hot rodded bikes that go for elevated prices, and then there are the bottom feeder bikes that have been used up, abused often and offered at a ridiculous price. This particular example feels more like the middle tier – modded and used, but presentable – and is pretty close in pricing to the 1985 example posted by Donn earlier today.

From the seller:
This 1984 Yamaha RZ350 is an original. The owner has had it for 5+ years. The vehicle runs great and is mainly used for weekend rides.

Bike has had a small restoration. Frame and swing arm have been powder coated. All new seals in components forks, front brakes, front master cylinder, etc. Has Airtech full fairing kit. Does not have YPVS anymore currently has a banshee top end. I do not have any of the original parts. Thanks for looking.

The seller has included the following walk around video of this particular bike. I am not exactly sure why one of the foot pegs is zip tied up out of the way, but otherwise the video shows a clean – but modified – RZ350:

Regardless of condition, RZ350s are hot property. That value is increased as the weather turns to a point where riding is possible around the country, and we are all itching to grab our leathers and hoon. And while we always recommend collectors purchase the best example they can find/afford, the truth of the matter is the RZ will always be in demand; even questionable bikes are fetching absurd prices. We do not see that changing at all in the future, except the prices are likely to be even higher. These are fun machines that really wail, they strike a pose very well in parking lots for bike night or cars and coffee, and are reasonably reliable given the volatile nature of two strokes. You can check this one out here as a compare and contrast – this is a great time to be in the RZ market!!! Good Luck!

MI

The Same, But Different: 1984 Yamaha RZ350
Yamaha May 13, 2022 posted by

King’s Livery – 1985 Yamaha RZ350 Kenny Roberts

Hardly a week goes by that a new* RZ350 doesn’t pop up these days !  While not a show bike, this example shows the Kenny Roberts colors nicely and has a bunch of NLA period updates.

1985 Yamaha RZ350 for sale on eBay

Yamaha knew that the two-stroke legality wouldn’t last forever, but kept updating the 59 hp, 320 lb. model – and it kept selling.  Liquid cooling made conformance to EPA exhaust and noise regs plausible, and the Power Valve System made the torque band wider than before.  Slotted discs were sized for the middleweight mission, and the fairly conventional chassis sported an early monoshock rear end.

On consignment for a long time customer, this RZ has been on display so might need a little help re-awakening.  Vintage Toomey chambers, intake, and battery box are of interest – especially since the factory take-offs are included.  Matching left and right tank dents are stickered over, and the handlebar fairing looks to have led the way into a couple of close shaves.  But the finishes are in good shape and the fork brace is a nice addition.  Comments and a list of upgrades and spares are in the eBay auction –

The bike has been very well maintained and is in excellent condition for the year with low mileage and a slew of upgrades and spare parts that come with it! The bike runs excellent and the electric start works, but there is no battery in the bike, as it is stored correctly in a collection and almost never ridden. The factory power valves have been rebuilt by the owner. There are two small dents in the gas tank on either side from the handlebar switches on the bars bumping into the tank over the years which is very common on the bikes (they are covered by the bullet stickers you can see in the pictures). Aside from that, please refer to the pictures for the most accurate description of condition. Aside from the upgrades, this bike is numbers matching and nearly all original OEM, the paint and decals are original and the mileage is true and correct.

-TOOMEY PIPES (VINTAGE 80’S – NOT NEWER PRODUCTION)
-TOOMEY INTAKE (VINTAGE 80’S – NOT NEWER PRODUCTION)
-TOOMEY BATTERY BOX (VINTAGE 80’S – NOT NEWER PRODUCTION)
-FORK BRACE
-BRAIDED STEEL FRONT BRAKE LINE
-STOCK CARBS REJETTED FOR EXHAUST (ONE SIZE UP PILOT AND 420 MAINS)
-TWO SPARE SETS OF OEM EXHAUST (PICTURED)
-NEW SET OF SPARE TIRES (PICTURED)
-OWNER’S MANUAL (PICTURED)
-MANY MANY MORE SPARE PARTS NOT LISTED (PICTURED)
-MANY MORE TASTEFUL PERIOD CORRECT UPGRADES NOT LISTED

More red/white models are in RSBFS recent history than bumblebee’s, and for Yamaha fans of a certain vintage the signature model is the one to try for.  Those same fans might be surprised at the bidding with eight days left to run, and further that the reserve is still unknown.  But even though the model has had a nice season so far, no more being manufactured, and this one has a nice combination of miles, patina, updates, and spares.

-donn

King’s Livery – 1985 Yamaha RZ350 Kenny Roberts
Honda May 3, 2022 posted by

Track Bike Tuesday – 1995 Honda NSR250 SP / MC28

Though a rarity on the road, smaller two-strokes are still a great track day solution, and the Honda MC28 is a great starting point.  A European builder started with a premium SP model, and went hurtling down the slippery slope from there !

1994 Honda NSR250 SP / MC28 ( Portugal ) for sale on eBay

Most elsewhere, the NSR250 had a long run and the MC28 was the last generation.  Tech and styling kept pace with racebike developments, though the powerplant was a fairly constant 249cc V-twin with a carbs and a legislated 45 hp.  Electronic PGM ignition and air controls kept exhaust as clean as could be and thwarted most tinkerers attempting to de-restrict.  All NSR250’s had a robust twin-beam alloy chassis, and the MC28 had the latest ELF-designed single-sided swingarm.  Big brakes reflected the track orientation rather than the light weight, and wheel sizes were both 17’s.

This MC28 looks wicked racey but so nicely finished and complete, it’s hard to believe it’s ever turned a lap.  Alloy pressings are polished and the race fairings fit well.  Premium components stick their logos out everywhere.  The PGM-IV hardware appears to be on the dash if not defeated, though information on the ignition system and a dyno sheet might be questions for the owner.  Notes from the eBay auction:

With only 4,375 miles or 7,000 km and year production 1995.
Originally a SP model, converted to a custom racing MC28.
Engine is 300cc, with VHM heads, Tyga 300cc cylinders, Wiseco pistons, HARC-Pro complete exhaust, modified carbs, Marchesini rims, Rear and front Ohlins suspension, big Brembo calipers, and a lot of Tyga parts. It has 2 keys.

Right up there with spending a Powerball jackpot, taking a newly commissioned lightweight racebike out is something many would like to try.  This owner has a couple of other excellent classics for sale, also at premium prices.  The builder wasn’t named in this auction, but the choice of donor bike, engine upgrade, and exotic parts look very professional indeed.  Will be interested to hear from the new owner if and when this NSR250SP sells.

-donn

Track Bike Tuesday – 1995 Honda NSR250 SP / MC28
Suzuki April 29, 2022 posted by

Portuguese Perfection: 1985 Suzuki RG500 Gamma

I’m not sure exactly what is going on in the sun-drenched land of fine port wines, but some amazing motorcycles are being cleared out of a collection and all are RSBFS worthy. In today’s case, just on the off chance that you were in the market for a pristine RG500 Gamma with low miles, let us share some of the details.

1985 Suzuki RG500 Gamma for sale on eBay!

The Suzuki RG500 should need little introduction on these pages, but if you Rip Van Winkled your way through the 1980s then a brief refresh might be in order. Designed to be a 500cc GP racer for the street, the big Gamma was of two-stroke configuration and utilized a square four engine arrangement (think of it as a siamesed pair of parallel twins connected at the crank). This was very much in line with the race bike, which was long before the four-stroke days of the current MotoGP. Intake and breathing was via 4 carbs synchronized through disk valves. And since two-strokes are very sensitive to exhaust pressure, the Gamma had four independent chambers; one for each cylinder. The frame of the Gamma was box-sectioned aluminum with castings for the headstock welded on. Front forks were high-tech air-adjustable with anti-dive, while the Full Floater rear suspension made due with preload only. As was in vogue in the day, the front hoop was a diminutive 16 incher, with a standard 17 inch wheel in the rear. Figure 95 HP pushing a 340 pound (dry) package; when the tach swings above 6,500 RPM, you’d better be holding on.

From the seller:
Suzuki RG500 GAMMA, mint condition.
With only 1060 Miles or 1700 KM and year production 1985, this is a very rare bike.
Complete JollyMoto Exhausts, make an astonishing sound.
Gsxr Wheels and front brake spacer to use original caliper.
Portuguese documents.
You can see by the photos, there in not even one single scratch or dent.
Original painting and decals all over the bike.
It has 2 keys.
Feel free to ask more pictures.
Bike is located in Portugal – Lisbon, but we work with Chas Mortimer Ltd to ship bikes to UK. You can also call them and ask for a feedback – shipping price is included.

This particular example has a popular mod that does away with the dreaded 16″ front rubber. It also sports some of the ultimate two-stroke pipe porn in the form of Jolly Moto chambers. Not only do the Jolly Motos weigh less than the stock pipes, they flow much better as well. That adds a power gain to the HP column, and an additional smile factor inside the helmet. They also make a fabulous sound at full song. The rest of the bike looks to be in pretty good condition overall (based on the photographs). Asking price is $32,500 US, with the seller open to offers. These are reasonably rare bikes that do not come up for sale all that often, although we do see Canadian bikes more frequently imported in the US. Given that this eclipses the 25 year mark for used bikes, importation into many States might be easier. Check out all of the details and photos here, and Good Luck!!

MI

Portuguese Perfection: 1985 Suzuki RG500 Gamma
Yamaha April 28, 2022 posted by

Another Day, Another RZ350 For Sale

2022 has brought plenty of Yamaha RZ350’s to market. Today’s is a runner but needs some light cosmetic work. The good news is that the reserve appears met and current bid is a hair over $9k with 2 days remaining.

1985 Yamaha RZ350 for sale on eBay

from the seller:

The bike was bought several years ago to be restored. The frame was powder-coated, cylinders sent to Gary at Spec II to be bored and get new pistons and rings. New tires were bought but the bike needed cosmetic improvements. Other projects came along so the bike was put in a clean, safe storage location after draining fuel and removing the old battery.

I took it out of storage and put in a new battery. I left the tank and carbs dry and started the engine with starter fluid. It fired right up. Now I would like to sell the bike but if a reasonable offer is not made it will go back to storage. Note that the original exhaust pipes are included. Bike has a clear title.

Another Day, Another RZ350 For Sale
Aprilia April 26, 2022 posted by

Featured Listing – 1997 Aprilia RS250 with 3,400 Miles !

Aprilia had a championship winner on their hands with the 1991 RSV250 road racer, and took it to the streets in 1995 in the RS250.  RSBFS reader Phil has been caretaker and occasional rider of this original and exquisite Mk. 1.

1997 Aprilia RS250 asking $14,500

Engineers put their sweat and tears into the RS250’s artful chassis, formed and welded alloy parts to make it rigid and light if not easy to understand.  Knowing that bringing their racing 249cc engine to the road would take some doing, Aprilia tapped Suzuki to supply their V-twin from the RGV250, and made their own intake, exhaust and ECU – resulting in 72 hp.  Suspension is leading edge with USD forks and asymmetrical magnesium swingarm, and the brake sizes would have been seen on a superbike just a few years before.  Ergonomics take no prisoners but make the rider ready for the next squiggly line on the map, and the peaky powerband coaches the left foot to keep 8,500 revs at a minimum.

Phil’s RS is a grey market import, and the metric odometer indicates 3,400 miles.  A friend owned it before him, and let it sit for an extended period, which Phil has reversed by a generous application of maintenance.  We’ll let him pick up the story –

My 1997 RS250 has a gray origin history, but the last 2 decades are clear. It is an Italian market bike, imported into the USA sometime in the early 2000s. It is a 17 digit VIN. It was purchased in 2004 by an acquaintance as a track day toy. He intended to ride it on occasion at the Autobahn country club. He had it prepped for use including tires, fluids, adjustments, etc. Not wired. It was stored in a garage awaiting that first ride. Time passed and it never turned a wheel – either on the street or track! I acquired the bike in April 2021 and had it shipped to me in UT. It showed 4,998 km on the clock. I went through a thorough reconditioning replacing the tires, fluids, hoses and fuel lines, complete carb rebuild, caliper rebuild, rear master replace, chain, air filter, and new battery. All with correct parts where available, sourced from APR and European suppliers. The engine was not disassembled. Oil pump, power valves, carb sync and choke cables were all adjusted to specification. New oil pump lines were installed. High altitude jetting was installed to complete evaluation rides in my locale and all was good!

The bike was trailered to Road America to participate in a 2 day trackday in July on stock jetting. The bike was awesome! The odo now shows 5,482 km which is where it will stay for the time being. Jetting remains at stock settings with the tank and carbs drained. Bike starts first kick every time.

The bike is cosmetically a 9/10+. No corrosion anywhere. The V-shaped portion of the belly fairing shows some stone damage. Two other minimal marks exist on the painted surfaces. A couple of rock chips on the nose fairing. No peeling or blistering anywhere. The frame is polished and shiny like it should be with no marks. The OEM key fob left a rub mark on the triple clamp so it has been removed from the key and placed with the original tool kit. The bike is stock save Jolly Moto expansion chambers with carbon silencers. Pillion seat and footrests are missing as are the stock exhausts. All lights and indicators are present and working. I have a clear UT title in my name. The bike can be registered in UT without restriction.

The unfaired pictures show this gem has been detailed even underneath it all.  The only bit showing any wear could be easily replaced and the next owner could show or go.  Phil is asking $14,500 for his RS250 and can be reached by email – here -.

And here’s a short video-

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The next owner of this RS250 could go either way, hit the back roads and embarrass four-strokes with double the displacement, or get the safety wire pliers out and join the like-minded at the nearest track day.  Or in this case do either occasionally ( and carefully ), and show it off in between dates.  The original design still looks great 25 years on, and the basic black shows off the chassis beautifully.

Contact Phil with questions at – phil@boxworks.com

-donn

Featured Listing – 1997 Aprilia RS250 with 3,400 Miles !
Yamaha April 19, 2022 posted by

Southwestern Style: 1984 Yamaha RZV500R

The world of 500cc two strokes is pretty small. But within that world is an even more exclusive club of limited editions and unique models. On the Yamaha side, the RZ500 is cool. But the Japanese market restricted offering of the RZV500R borders on the unicorn. Never officially exported by Yamaha outside of Japan, the RZV500R is a sharper version of the base RZ500 found elsewhere. As such is it much more rare, very coveted, and a rider and collector dream machine in its own right.

1984 Yamaha RZV500R for sale on eBay

As delivered, the Yamaha RZV500R was a bit of a conundrum. Utilizing an aluminum frame (as opposed to the RZ500’s mild steel version), the RZV tips the scales at an anorexic 20 lbs lighter than the rest of the world RZs. The RZV has a few other aluminum parts that help shed the weight (shift and brake levers, etc), but those are minor compared to the hand-welded frame. There is also a nifty feature that allows the water temp gauge to double as a fuel gauge at the push of a button. The remaining changes are home country specific, and include a red light on the dash that lights up when nearing the max speed limit in Japan (55 mph in US terms). Riders should be aware that this red light doubles as the oil tank reservoir level – if you’re not speeding and the light is on, better top up on the smoke juice. And then there’s the downside: as a Japanese only machine, the power output of the RZV500R is restricted to 64 HP (down from the reported 88-ish for export RZ500 models).

From the seller:
1984 Yamaha RZV500R
Stock
12000km
Parked and not started since 2011 – was not prepped for storage
Not perfect but very nice.
Includes full Jim Lomas carbon/carbon fiber, box never opened
Includes 2nd triple clamp set with 2nd set of forks, to replace upper triple clamp on bike (corroded)

Unverified story;
imported Japan-England-Canada-Michigan, some paperwork. Parked outdoors in Japan

Has Arizona title, can easily be registered in Arizona

With only 1,600 units produced, interest in this particular RZV500R is high. The seller notes it has been parked for a decade without being prepped, but no notes of whether it is running. The bike does come with some additional parts, including a set of Lomas pipes. These are one of the two key items necessary to de-restrict a RZV500R. Since this predates computer controlled electronic ignition, Japanese market restriction was accomplished via choking down the exhaust and running jetting that matched that flow pattern. Fitting the bike with a natty set of chambers will greatly wake up the beast within, as long as careful attention has been paid to the upstream jetting. Bam! One full horsepower (and then some) RZV500R made to order.

This bike looks like a true survivor, exhibiting some evidence of life in seaside Japan. But the corrosion doesn’t appear too severe in the pictures. There are some unknowns in terms of the engine – and crank seals would be a first priority – but that is all standard stuff for what amounts to a very rare and coveted model from a pretty golden age of two strokes. Check out all of the details here, and then check your bank account, your 401k, and your kid’s college fund. This Arizona-based beauty has climbed over $13k and will likely go quite a bit higher before all is said and done. Good Luck!!

MI

Southwestern Style: 1984 Yamaha RZV500R