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Yamaha May 20, 2016 posted by

Super Single: 2008 Yamaha YZ450F Track Bike for Sale

2008 Yamaha YZF450F L Side

We normally try to post unmolested, rare and exotic motorcycles here on RSBFS. Not customs or kit bikes, no matter how nice. But this little flyweight track-day terror based on a YZF450F seemed like a good excuse to break our own, self-imposed rules. Racing is an expensive hobby, even if you’re doing everything you can to keep costs low: just tires, fuel, and wear items combine with the running costs of whatever you’re using to haul yourself and your bike to the track to make this a serious time and money-suck. And that’s before you start crashing, and before you decide you actually want to be competitive… Track-days are a great way to get casual speed-fix, but if you’re using your streetbike, you’ll always be worried about trashing your street ride while trying to find your limits. And honestly, most sportbikes have way more power than the average rider can really exploit on track anyway.

2008 Yamaha YZF450F Rear Wheel

So what do you do when you want a lightweight, easy-to-maintain pure sporting machine that you can push to the limit on track? Small displacement two-strokes from Honda, Aprilia, Yamaha, and Suzuki are pretty rare to begin with and obtaining parts for the race-only models could prove difficult. There’s a couple reasons that the GSX-R models are so popular at the track. Obviously, they’re pretty great sports motorcycles, right out of the box. But another reason is that everyone has them. Lowside at the track? “Hey buddy, do you have a spare clutch lever, clip-on, and rearset I could borrow?” Bam, back out on track.

2008 Yamaha YZF450F Clocks

So the ideal budget racebike would have solid, useable power in a broad range, be cheap to buy or build, and have easy parts availability. Folks like Roland Sands and the guys at GP Tech who built this bike have been pushing the formula for a while, offering kits to update wheels, suspension geometry, and bodywork to stimulate interest in a low-buck, entry level race series based around offroad bike foundations. Have an old thumper lying around and wanna build something really cheap? You could spend as little as $5,000 plus some grease under your fingernails.

2008 Yamaha YZF450F Rearsets

Or you could just buy this one. It’s certainly a big higher-spec than you might build yourself on the cheap, and considering what the seller is asking it seems like a pretty enticing deal. The seller claims a wet-weight of just 235lbs and that big, tuned single should give plenty of torque to move you down the straights, even if you’re not built like an anorexic jockey.

From the original eBay listing: Yamaha YZ450F Race Bike for Sale

Built in house by Geoff at GP Tech. Starting with new ’08 Yamaha crate motor, ’07 YZ450 frame, powercoated. R6 front end with Ohlins internals. Ohlins rear shock, Galespeed forged wheels (uses 120 front, 150 /160 rear). ValterMoto adjustable rear sets.

Well over $20k in receipts including a factory Yamaha GYTR race head installed at 20 hours ($2k!). Titanium M4 exhaust, all Graves stuff for the single (oil breather recycle etc). Many custom machined parts for retrofit. Modern TZ250 bodywork w/ airtech tank cover. Dual race radiators with silicon hoses.

ALL the fasteners are titanium (including shock and linkage, motor mounts, etc., etc.: roughly $2k).

Weighs in at 235lb wet, bike dynoed when adding 9 map programmable ignition with 2 map switch, Hinson slipper clutch, water temp gauge, now has 47 hours total (27 on head) valves just checked. Runs on pump gas but I use Sunoco 100.

Kick starter that works with the TZ250 bodywork! Starts easy hot or cold.

Never crashed or down, always senior adult ridden.

Some spares, sprockets, ignition, Spare bottom end for future rebuild, shim kit, front and rear stands, tire warmers, service manuals. It is always a conversion piece at the track.

Great clubman bike, D Superbike or fun trackday bike. Sprung for a 175lb rider.

2008 Yamaha YZF450F Front Wheel

These are billed as “affordable race bikes” but, as you can see from the build, “affordable” is a relative term. And while it’s great to put something to your exact specifications, it’s generally way cheaper to buy a machine someone else has already sunk the blood, sweat, and tears into. With a starting bid of $5,000 and a Buy It Now price of $6,500 it’s obvious that you’d be getting a good price, considering the components and effort that’s gone into this little Yamaha. A lightweight race bike for the price of a nice used 600cc supersport? And TZ250 looks thrown in to the mix? Sign me up!


2008 Yamaha YZF450F R Side

Super Single: 2008 Yamaha YZ450F Track Bike for Sale
MZ April 8, 2016 posted by

Budget Blaster: 1997 MZ Skorpion Sport Cup for Sale

1997 MZ Skorpion Sport Cup R Side

Not every exotic needs to try and tear your arms out as soon as you twist the throttle, and not every rare motorcycle needs to cost a packet to buy or run: sometimes our need to be just a little bit different clashes with life’s practical considerations. For riders in that particular situation, may I present the MZ Skorpion Sport Cup, a big, thumping single wrapped in sports bodywork and featuring a name virtually forgotten here in the Decadent West.

1997 MZ Skorpion Sport Cup R Side Front

MZ was originally an East German manufacturer of two-stroke motorcycles back when East Germany was actually a place. All you fans of sporting Japanese two-strokes should be familiar with them: they absolutely dominated two-stroke racing in the late 1950s until MuZ rider Ernst Degner defected and brought their Walter Kaaden-developed expansion-chamber tuning techniques to Suzuki where he helped develop their bikes and continued his racing career.

1997 MZ Skorpion Sport Cup Dash

But then in the mid-1990s, seemingly out of nowhere, an entire range of new machines sprouted up, all badged as MZs. The modular design recalls Triumphs of the same era, and the line of bikes included the dual-purpose Baghira, the supermoto Mastiff, sport-touring Traveller, and the various Skorpion variants. All were built around Yamaha’s 660cc five-valve single backed by a five-speed gearbox. 48hp and a weight not much over 400lbs with a tank of fuel means that the lightweight Skorpion was capable 110mph with excellent handling and good reliability.

1997 MZ Skorpion Sport Cup R Side Front Wheel

From the original eBay listing: 1997 MZ Skorpion Sport Cup for Sale

Conceived by the acclaimed UK design firm SeymourPowell, the MZ Skorpion represents a motorcycle design perfect storm of sorts. The elegantly simple, yet rigid chassis inspired by (some might say stolen from) the work of Tigcraft’s Dave Pierce contains an ultra simple and reliable XT660cc engine as well as electrics from Yamaha. The world class Grimeca and Paoli suspension and braking components come from Italy. All of this was designed and assembled by the German engineers at MZ – one of the oldest, most venerable marques in the history of  motorcycling.

The Skorpion didn’t sell in large numbers, but had a solid following in the racer community. It’s exceptional handling and simplicity spawned single model MZ Cup series all over Europe and the United States in the 90s and the beginning of the 21st century. This particular variant – the Sport Cup – came with a full fairing, and was made to compete in the US and UK MZ cup series as stock, with no modifications allowed. Because of the popularity of the class, few unraced, clean Sport Cups exist today.

The Skorp also appeals to every day riders. It is refreshingly small in size, light weight and has the broad power and bulletproof reliability inherent in the Yamaha dirtbike inspired power plant that is still being built today. Simple and reliable, it is an easy bike to maintain and, unlike many exotics, most of the wearing components interchange with various Yamahas of the period and are therefore quite available. Motorcycle News calls it “light, lithe, generally reliable, and reassuringly practical” and “one of the best singles of modern time”.

This particular bike is in truly excellent condition. It was garaged all of its 3,500 mile life and has been kept clean and well maintained. The only non-stock component is a center stand from its sister model, the Traveller. While not the norm on the club racer, it makes for easy wheel and chain maintenance, and is easily removed. It also comes with the full original toolkit, the factory solo seat cover to replace the rear seat, and the original owners manual.

1997 MZ Skorpion Sport Cup L Side Rear

These bikes are virtually forgotten now, and can be had for very small sums on the rare occasion you can actually find one. This example has almost insanely low mileage, considering the bike’s nature, and appears to be in very good condition. The Buy It Now is just $3,000 with very little interest so far. A one-make racing series was available for the bikes at the time, and they are very popular for use in single-cylinder racing classes today, but it’d be a shame to see one this nice get chopped into a track bike.


1997 MZ Skorpion Sport Cup L Side

Budget Blaster: 1997 MZ Skorpion Sport Cup for Sale
Gilera March 31, 2016 posted by

Slippery Stroker: 1991 Gilera CX125 for Sale

1991 Gilera CX125 R Side Front

The impossibly exotic Gilera CX125 still looks futuristic today but, while the fully-enclosed bodywork and unusual suspension appeared radical when new, the underlying mechanical bits are surprisingly pedestrian. Sure the bike handled well, but the 125cc two-stroke single powering the CX is far from the exciting, sophisticated engine you’d expect, considering the bike’s striking design. The bike does have an electric start to get the bike snap, crackle, and popping so there’s at least a nod to sophistication…

1991 Gilera CX125 L Side

At 300lbs wet, the modest 28 rear-wheel horses certainly moves the bike along, but performance couldn’t be considered much more than “brisk,” with a top speed hovering around 100mph. Of course, straight-line performance wasn’t really the point.

1991 Gilera CX125 Dash

Single sided front and rear suspension mean that the bike appears to have no suspension at all when viewed from the right-hand side: the wheels just seem to float in space. The design of the front isn’t as ambitious as something like the Tesi or GTS1000. It’s basically just a telescopic fork with one leg missing and was developed by suspension specialists Paioli. It handles well, but that’s likely due to the bike’s light weight and sporty frame geometry: the advantages of this setup are mainly cosmetic, aside from the fact it should make for easy tire changes.

1991 Gilera CX125 Front

From the original eBay listing: 1991 Gilera CX125 for Sale

Located in Santa Ana, California. This bike has 3432 KM = 2059 Miles. I believe this bike is all original, but not 100% sure. I’m not a expert on these CX125s. Engine runs good, no problems. I think the bike is in good condition for it’s age. This bike is being sold with a bill of sale only. I don’t have a title for the bike and can not get one, so don’t ask. All stupid questions will not be answered. More info is available on our website. If you overseas or Canadian buyer, you will have to make your own shipping arrangements. I can help USA buyers with the shipping, or you can arrange your own shipper. Bike is being sold as is, no returns. Ask questions and look at the pictures carefully before you bid. Again, this bike is being sold with a bill of sale only, NO TITLE.

1991 Gilera CX125 Front Suspension

Oh god, right there at the end: “no title”! Such a shame, since a CX125 certainly isn’t much good for track work. Aside from some very minor imperfections, the bike appears to be in beautiful shape which is great because, unless you live in a state with a very permissive DMV, this bike is going to be on display in your home, not down at the local bike hang out…

1991 Gilera CX125 Rear Suspension

At a starting bid of $5,900 there are no takers yet. Certainly, you’re not buying performance here, but that price does seem like a pretty fair price for such a rare and interesting machine. Even if you’re forced to just look at it.


1991 Gilera CX125 R Side

Slippery Stroker: 1991 Gilera CX125 for Sale
Aprilia December 16, 2015 posted by

Under the Tree – 2001 Aprilia RS50

Stylin’ as a pit bike or unlicensed starter, the RS50 looks for all the world like the turn-of-the-century RS125, or if you squint, an RS250.  Not really built for serious fun, though it does have an aluminum frame and 17 inch wheels.

20151215 2001 aprilia rs50 right front

2001 Aprilia RS50 for sale on eBay

20151215 2001 aprilia rs50 left

Running an engine 0.3 cc less than the limit, the RS50 stays in the moped category.  Though generally restricted to 30 mph, unrestricted versions are capable of a little over 60 mph, better fun.  The Dell-Orto carburetor and disk brakes are hopeful for a larger machine in the future, but this one is perfect for the neighb or the pits.

20151215 2001 aprilia rs50 binnacle

20151215 2001 aprilia rs50 right fairing

Likely owned by a racer or an Aprilia fan, this RS50 is in nice shape with just a hint of hangar rash here and there.  Showing a low 1,700 miles, it’s just hard to rack up the miles hugging the shoulder.  From the eBay auction:

2001 Aprilia RS-50 with only 1767 miles.

Completely stock and in mint condition. Oil injection.

New Pirelli’s, tuned, and serviced.

No work needed: This is a turn-key bike with clean, clear, street-legal title.

Collector quality!


20151215 2001 aprilia rs50 left front

20151215 2001 aprilia rs50 right seat

Still warm enough for a test ride, only a couple of hours northwest of NYC.  Just the thing for the ( future ) sportbike nut on your Christmas list…


Under the Tree – 2001 Aprilia RS50
Aprilia November 4, 2015 posted by

The Perfect Holiday Stocking-Stuffer: 1999 Aprilia RS50 for Sale

1999 Aprilia RS50 R Front

In spite of its tiny displacement, by US standards at least, the Aprilia RS250 is not a toy. The RS50 on the other hand? Possibly a toy. But a very serious toy: this may have the displacement of a scooter and may not even require a motorcycle license endorsement in some states, but it’s a real motorcycle, in miniature.

1999 Aprilia RS50 Dash

From twenty feet away, you could easily be forgiven for mistaking this for it’s larger, 250cc sibling, or even a sports 600 if you’re not into Aprilias. With disc brakes front and rear, a set of 40mm upside-down forks in the front, complete instrumentation, and a six-speed gearbox, it’s got all the features of a genuine sportbike.

1999 Aprilia RS50 R Rear

Powered by a 49.7cc two-stroke single, the RS50 does offer pretty limited straight-line performance. Originally, these were generally restricted to just 30mph, but de-restricted, they’re good for an honest 50 or 60mph, which is plenty fast for something powered by an engine the size of your average leaf-blower…

From the original eBay listing: 1999 Aprilia RS50 for Sale

Condition is like new, purchased and titled in Idaho, shipped by original dealer to California.

After delivery, started once and rode it for 2 miles to make sure everything worked. Then put in office behind plate glass as display/decoration with several other Ducati, Triumph and Moto Guzzi motorcycles.

Never sat on or started since. Sold as is with no warranty what so ever.

Registration has expired. Clean title of course

Before display, battery were removed, fuel stabilizer poured in tank, carburetor was “drained” by turning the pet cock to off position and run the fuel dry.

Indoor all its life, behind plate glass and never disturbed.

Local buyer preferred, Shipping is to be arranged by non local buyer to pick up and crate the motorcycle.

Photos were taken this afternoon (10-31-2015), after removal from office and transported to owner’s garage. Check the photos carefully, tires still have unworn nubs, all control show NO wears. This is about as new as a 2 stroke fly weight pocket rocket you can still buy today.

1999 Aprilia RS50 Grip

Weighing in at a svelte 197lbs dry, this should be very easy to load into a pick up or onto a trailer to take to the track. And track this you should: with a top speed of 65mph with the help of a tailwind, road use is going to be limited, to say the least. But people race these in MiniGP classes often held on kart tracks against similar bikes from Honda, Derbi, Yamaha, and Suzuki. And if road use is what you want, you can certainly drop in a 70 or 80cc kit to make yourself and extra… couple horsepower. But given the 8hp or so the bike has to begin with, and extra two or three ponies is nothing to sneeze at.

1999 Aprilia RS50 Seat

The starting bid of $3,279.00 has no takers as yet, with 3 days left on the auction. Certainly, considering what Honda CT70s are going for these days, that seems like a pretty good deal and appears to be in perfect condition, with just 9 miles on the odometer. Nostalgia aside, that vintage machine doesn’t offer nearly the sex appeal or opportunity for track-day trouble of this little bike.


1999 Aprilia RS50 L Front

The Perfect Holiday Stocking-Stuffer: 1999 Aprilia RS50 for Sale
Track Bikes For Sale July 23, 2015 posted by

Featured Listing: 2009 Husqvarna SM450RR F450 Super Single

2009 Husqvarna SM450RR L Side

Today’s Featured Listing Husqvarna SM450RR-based roadracer is a bit outside what we usually feature here, a bike without much of a pedigree or racing history, but one that has function and character by the bucketload. Race bikes are often cost-no-object creations designed to perform without compromise. Super Singles are almost the complete opposite of that design brief and are built to provide the foundation for a race series that keeps costs low and the level of competition high.

2009 Husqvarna SM450RR L Rear

The costs to run top-tier race teams in Moto GP and WSBK are astronomical and, even with limits in place to keep costs from spiraling out of control, there are few that can play at that level. It takes mountains of money and talent to compete, with very few slots and many eager riders fighting to fill them.

2009 Husqvarna SM450RR R Front

So how do you get started racing if you aren’t blessed with deep pockets, or want to really learn the ropes on something that rewards finesse and talent? Where do you find the perfect bike to go racing on a budget? Something with torquey, flexible power, light weight, reliability, and easy parts availability, a bike that allows the riders, not the bikes to shine brightly?

2009 Husqvarna SM450RR Engine Detail

A number of big names, including Roland Sands, were involved in developing bikes to compete in an AMA Superbike feeder class, and bikes like this were the result. Several companies stepped up to the plate and produced kits that utilize big offroad singles as the basis for roadracing machines, utilizing the donor bike’s engine, frame, and swingarm. New wheels, brakes, suspensions, and bodywork were added for the bike’s new mission and while the resulting bikes weren’t exactly cheap, costs could be kept manageable. Performance? With a weight of about 250lbs and 60hp these are seriously quick machines with the power-to-weight of a tuned two-stroke 250, but with a fat wedge of midrange and durability undreamed of by the smoker brigade.

2009 Husqvarna SM450RR F450 Super Single for sale on eBay

From the seller: Brand New 2009 Husqvarna SM450RR Road Racer

Gavin Trippe (A legendary motocross and road race promoter, father of the Supermoto and the AMA Superbike Championship) joined with Troy Lee Designs and Roland Sands Designs to build several F-450 examples based off of current 450cc Motocross bikes.  One of the last and the most expensive design the trio has designed is this Husqvarna 450RR and it’s ready to race!

This Husqvarna’s SM450RR Limited Edition is the only one imported and was constructed to celebrate Husqvarna Motorcycle’s success in the 2008 Supermoto World Championships when Adrien Chareyre (France) and Husqvarna bike won 2 world titles. This motorcycle was the identical backup bike of Adrien Chareyre setup but not raced.

The SMRR’s power plants are more powerful “race” versions and are mated to six-speed gear boxes derived the mx bikes which come stock with a STM slipper clutches. Changes to the engines include an enhanced electric started, 41mm Keihin carburetor and along with special cams and pistons. In collaboration with Arrow, Husqvarna engineers designed a tailor-made exhaust system for the SMRR’s which are constructed from titanium (complete) and feature twin silencers and heat shield also made of titanium.

The bike offer a TIG welded frame with adjustable steering heads (just like on the official Team Husqvarna machine) as well as a shortened, black anodized swing-arm that improves traction and maneuverability. The one-piece steering plate made from anodized Ergal and the increased diameter steering pivot is all aluminum.

The brakes are special for these models and feature a one-piece caliper and pump. Wave disc rotors from Braking are oversize 310 mm for better compromise between adjustability and stopping power. 

Front suspension is handled by 50mm sealed cartridge Marzocchi Forks, and the rear is controlled by a Sachs racing aluminum bodied shock.

There are several titanium bolts on the bike.

The twin-colored anodized aluminum fuel filler cap is special as are the one-piece anodized Ergal racing handlebar clamps. The racing type stand is included.

This bike has never been on a track.

What?! “This bike has never been on a track”?! Someone buy this thing and rectify that immediately! It’s almost a shame that the best thing to do with this Husky is thrash the living hell out of it on track, considering how nicely put together it is. With a number of companies currently making kits to convert dirt bikes into whippy little roadracers, the final product will certainly vary in terms of polish, depending on who’s built them. That’s not a problem with this one.

2009 Husqvarna SM450RR Rider View

Although this nicely finished and highly spec’d machine is unlikely to ever be a collector’s item in the same way the Honda NSR250 has become, it’s the perfect tool for going fast or learning to go fast and will look good doing it.


2009 Husqvarna SM450RR L Naked

Featured Listing: 2009 Husqvarna SM450RR F450 Super Single
Ducati July 12, 2015 posted by

Super Single: 1993 Ducati Supermono for Sale

1993 Ducati Supermono 2

Well, this certainly isn’t the best-photographed Ducati Supermono I’ve come across: those pics look straight out of some grainy newsreel footage from the 1940’s, but it’s still beautiful, and this is one of those bikes we always have to post when they come along. Perhaps the very best of Terblanche’s futuristic designs, it looks obviously part of the Ducati family, and at the same time, like nothing else.

1993 Ducati Supermono 4

Designed to compete in the Sound of Singles series that supported World Superbike, the Supermono had, as you might expect, one cylinder. But while big singles produce whomping big spoonfuls of torque, they tend to be limited in terms of how high they can rev by the fact that they vibrate themselves to pieces. And even if the engines held together, the riders’ bones would turn to dust and they wouldn’t be able to see anything anyway.

But Ducati had a better idea. Basing their engine on their usual four-valve “L-twin,” they simply blanked off the rear cylinder. Okay, simple enough so far. But then they fitted a dummy con-rod to help balance out vibration by simulating the forces generated by the missing vertical cylinder.

1993 Ducati Supermono 4

The result was a 549cc single that could wind around to 11,000rpm safely and produce 65hp while weighing in at under 300lbs dry. Fitted with brakes from the standard v-twin superbike, stopping power is never an issue, and the bike corners like a 250GP machine.

It’s hard to see, but there are many bits like top triple clamp and engine cases that are suspiciously green. Why green? #becausemagnesium.

1993 Ducati Supermono 3

Also: I just love racing tachs like this. They’re basically saying, “Look, this bike doesn’t really even make any power there anyway, so what’s the point of worrying about it? Let’s just forget about those revs, okay?”

From the original eBay listing: 1993 Ducati Supermono for Sale

Up for auction is an extremely rare 1993 Ducati Supermono.
A must have for any Ducati collector.
#16 out of 67 worldwide
Barely used, looks brand new.
Runs beautifully! I have a video upon request.

Race bikes look so good because their form obviously follows function. They’re beautiful like fighter jets are beautiful: there’s sinister purpose in that shape, and that’s the tragedy of any collectible race bike. They’re obviously wasted, sitting in collections.

But just 65 Supermonos were produced between 1993 and 1995and they weren’t cheap when new, so people tend to risk lesser machines for their racetrack outings. As the seller suggests, these are some of the most collectible modern Ducatis. it’s a shame they never made a roadgoing version: you want a streetable Italian supersports single with racing credentials, you have to pick up a Bimota BB1…


1993 Ducati Supermono 1

Honda June 6, 2015 posted by

Super Single: 2008 Honda CRF-Based Race Bike

2008 Honda CRF450R Race Bike L Front

So, this is one for the riders, not the collectors. This bike has no historical value whatsoever: it’s a mongrel roadracing single-cylinder track bike based on Honda’s four-stroke CRF450 dirt bike. But it’s a very well put-together mongrel, and one that looks like it’d be a ton of fun at the track!

2008 Honda CRF450R Race Bike L Rear

This sort of thing has become popular in recent years, with a number of manufacturers making suspension, fairing, and rearset-control kits to create race and track day bikes to compete in Sound of Singles classes and the like.

Just add dirt bike.

Singles make ideal bikes for budding track day junkies: torquey, flexible, and reliable, with incredible light weight that stresses handling over power. Like a 250cc two-stroke, but easier to ride, and with much longer service intervals.

From the original eBay listing: 2008 Honda CRF 450R-Based Race Bike for Sale

The most amazing motorcycle ever!

511 big bore with 0 miles on re-build


Marchesini wheels

Catalyst Bodywork Audi Racing Blue Pro Paint with spare set new unpainted unmounted

Custom EVERYTHING from Race-Tech

I will throw in MANY SPARES inc piston ,cylinder, radiators, hoses, sprockets, cams, valve spacers, un-painted never mounted full set or race faring and many more extras

Well, I’d say that calling this “the most amazing motorcycle EVAR” is probably crossing the line into hyperbole just a bit, but we’re looking at a nicely put together bike, with a spares package to keep you riding

The seller also includes a link to a very comprehensive walk-around of the bike that’s worth a look if you’ve any interest in these bikes at all.

2008 Honda CRF450R Race Bike R Side

$7,000 isn’t cheap, but I doubt you could replicate a bike like this for anywhere near the price. And while it isn’t as sexy as an Aprilia RS250 or RGV, it will likely be far less of a headache to run, with no worries about binning a future classic!


2008 Honda CRF450R Race Bike Yo

Super Single: 2008 Honda CRF-Based Race Bike