Posts by Category: Derbi

Derbi October 12, 2018 posted by

Featured Listing: 2005 Derbi GPR50 for Sale

Considered a moped for legal purposes, today's Featured Listing Derbi GPR50 looks like a real motorcycle for the most part: liquid-cooling, electric start, full fairing, 17” wheels, under tail exhaust, six-speed gearbox, aluminum frame… But then there’s the lawnmower-sized 50cc displacement. From the factory, you were looking at 8.8hp at the crank, or around 5.5hp at the wheel. Normally, I scoff at partial horses, but every single pony counts when you’ve got just 49.9cc to work with. The same thing goes for the .9cc displacement, obviously.

The hydraulic brakes work well, especially considering the GPR50's light weight, but you certainly won’t need them to slow down too often: the bike takes care of that for you by not being fast to begin with. Obviously, top speed isn't the point with a bike like this, and the parts are there to maximize the limited power: that six-speed box means you can stay in the meat [tofu?] of the powerband and, while the suspension is pretty basic, a 242lb weight and great geometry mean a GPR50 could be pretty fun on a tight road or go-kart track.

This example has been modified with a 77cc "big bore" kit that should take the bike to around 9 horses at the rear wheel, but the bigger jump should be in torque: the stock bike makes around 4 ft-lbs and a kitted bike like this should be closer to 7... Performance data for the GPR50 is pretty scarce, but a Cycle World review of the mechanically similar 2000 year model with the same kind of displacement upgrade claimed 60-65mph on level ground, with 75mph possible, flat-out in sixth gear, using a bit of drafting…

From the Seller: 2005 Derbi GPR50 for Sale

For sale is a US spec (MPH speedometer) 2005 Derbi GPR50. At one point this bike was imported to Quebec Canada, and the present owner has had the bike for the last 6 years. Due to the fact that this is registered as a 50cc, and it was plated as a  Scooter. We still have the Quebec registration that states its a "CY" (cyclomoteur = scooter). PLease check with your own state laws, as it differs from state to state. 

The Derbi GPR50 is a single piston two stroke 6 speed water cooled bike. Inverted forks, and monoshock rear suspension. Electric starter and weighs in at about 220lbs. The Derbi GPR50 up for sale in Montreal Canada, and has about 12,000 miles (To be confirmed; battery will be changed to access mileage) bike was totally rebuilt in 2014. 77cc Airsal cyl. Top racing crankshaft, 21mm carb. Arrow exhaust/expansion chamber, clutch and reeds from Malossi, new chain, new sprockets, and tires. bike was used for about 1800 miles since rebuild, and has always been sitting inside our climate controlled garage. It has not been used on the road since about 2 years. Bike has a few scratch from a small miss hap in 2014, and a few blemishes from being a 13 year old bike. Besides that , in extremely good condition , and will reach about 70MPH in 6th.

Needs a battery (we will put a fresh one in), and the clutch could be refreshed. Bike has an electric starter. Asking $2,900USD firm, will crate, and assist in shipping, but shipping to be arranged, and paid by the buyer. We have the clean, and free of lien registration, (which is the same as your Title).
Originally a US import, so gauge in MPH. Paypal for initial deposit, but bank transfer is the only way we will ship the bike, unless you pick up with cash. This is a private sale, feel free to contact the seller, at his place of business for more information.

Obviously, a GPR50 is more a toy than an actual transportation device, even with the increased 77cc displacement, at least in most of the United States. But for $2,900 this could make a great urban runabout, or a massively overqualified but very stylish pit bike. Or maybe you've got a youngster looking to start a racing career?

Contact info@tech-53.com with your interest.

-tad

Featured Listing: 2005 Derbi GPR50 for Sale
Derbi July 21, 2018 posted by

End of an Era: 2006 Derbi GPR125 for Sale

This Derbi GPR125 was the very end of the line before the Spanish manufacturer, and pretty much everyone else, switched from two to four-stroke engines for their entry-level 125s. As you might expect, this led to the expected decrease in stinky two-stroke smoke and a massive reduction in fun. 125cc two-strokes aren't exactly barn-burners, but they make much more power than four-strokes of equivalent displacement while weighing significantly less, and the change meant the class went from being high-strung funsters with youth-safe limits to the boring, efficient commuters and learner bikes of today.

The two-stroke 125s were bikes for new riders, but they were styled to inspire wannabe racers and incorporated some advanced design elements. The frame was aluminum, and the box-section swingarm was braced, although the 33hp [once derestricted] engine probably didn't really require it. A six speed gearbox meant you could make good progress using the minimal power available, since the bike weighed in under 300lbs wet. And the styling seen here is extremely aggressive and the bike is surprisingly well-finished, with neat details like electric start, turn signals mounted in the mirrors, and an undertail exhaust.

The main issue is that all of the bikes in the class have limited straight-line performance and pretty basic suspension: they were meant to provide budget transportation and, looking past the manic engines, the bikes are fairly uninspiring, upside down forks, modern frame design, and sporty looks aside. Luckily, the geometry is excellent so the handling is good, in spite of the crude components, and the bike uses Yamaha's liquid-cooled TZR125 single, so reliability and parts availability should be no problem.

From the original eBay listing: 2006 Derbi GPR125 for Sale

Look closely, it's the only one you're likely to see here in the states! This is a 2006 Derbi GPR125 Racing. Only a handful of these were brought into the U.S. The engine was sourced from Yamaha, by Derbi, and it's the same engine used in the Euro-spec liquid-cooled Yamaha TZR125R street bike, and the DTR 125 2-stroke dirt bike. It's liquid-cooled, and has 6-speed trans, electric start, power valve, and oil injection, so premixing isn't necessary, just pull up to a gas pump and fill it up. I've only run Motul synthetic in it since I've owned it. If you don't know anything about 2-strokes, you should probably look elsewhere.

I've owned this bike ten years now. It's been unbelievably reliable, but I'm ready to move on to something else. It's currently showing approx 8300 miles on the clock, but I still ride it to work sometimes (although I also have other bikes I ride regularly). The indicated mileage is 662 miles less than actual. The original meters only read in kilometers. I picked up another set that reads in miles and mph. The difference between the two sets (after converting kilometers to miles) was 662 miles, that's the reason for the discrepancy.

The top end was rebuilt about 1500 miles ago, strictly for maintenance, not because there were any problems. I port matched the cylinder to the cases while I had it apart, because the factory matching was very poor. I also cleaned up all the ports. The cylinder is still standard bore and in excellent condition. This bike came in 1st place overall in the 2009 Lake Erie Loop, completing 659 miles in 11 hours 16 minutes. That's WFO across Canada for hours. If that's not a testament to reliability, I don't know what is! And it won by a long shot! http://www.lakeerieloop.org/race-results/2009-rr.html

The list of mods/upgrades/spare parts is long, so buckle up! Besides the top end work already mentioned, the stock carb was replaced with a Keihin PWK D-slide, it has Boysen dual-stage reeds, heavy duty clutch springs, a 3-degree advance key, and an Arrow undertail exhaust with titanium muffler. I also have for it a hand-built Jim Lomas side-exit pipe with a carbon fiber end can. Only ten of these pipes were built, and this one is serial numbered 007! (Just lucky) I also have a spare set of lowers that have been modified to clear this pipe. The air injection pump and associated plumbing have been removed. I think that wraps up the engine part of the program.

The front brake disc was replaced with a full floating wave rotor from Metrakit. The rear sprocket is a custom made, lightened aluminum sprocket. The bike came with no helmet lock from the factory, so I was able to add one from a Yamaha YSR50. The crazy heavy steel rear brake stay arm was replaced with a custom made aluminum one. The stock plastic shifter was replaced with an aluminum one from an Aprilia. The rear pegs and peg hangers have been removed, as has the long stock rear mudguard, and small LED turn signals were installed to clean up the rear end. The orange stripes on the rims are just rim tape. You can remove it in five minutes if you don't like it. The bike tips the scales around 285 lbs with a full tank of fuel. I also added a Sigma bicycle computer. They're super accurate, and you get a second trip meter in the deal. The stock windscreen was replaced with a Puig double-bubble screen (an incredibly nice piece!). From the factory, one headlight is for low-beam, one for high-beam. The only time both are on is when you hit the flash-to-pass switch. I added two relays, so now when you hit that stitch, both will come on and stay on, until you hit it again. I also installed headlight bulbs that are slightly higher wattage than stock. This was done a long time ago and there have been no problems. I'm a fanatic about NOT making mods that can't be reversed, so everything can be put back to stock if you choose, although I think all these mods are for the better. I have ALL the stock parts, except for the stock muffler, and stock front brake rotor. 

I have a HUGE amount of spare parts for this bike (I'm a motorcycle hoarder). I have a bunch of spare bodywork, some electrical parts, spare factory decals, all the stock parts that were removed, and other misc odds and ends. 

The swingarm stand down in the photos is NOT included in the auction. The bike has a regular side stand.

The common wear items, like tires, brake pads, and chain are in usable condition, but are nearing the end of their service life. Battery is in very good condition. The bike always starts easily, always goes, and there are no other issues I'm aware of, other than what I just mentioned. And since I know someone is going to ask, I've had it over 80 mph on flat ground with my 165 lb self on it.

The bike has a clear Ohio street motorcycle title.

This is truly a once-in-a-lifetime opportunity. I challenge you to find another one of these for sale in the U.S. So please, keep it real. I'll be happy to help with shipping from my end, but this is totally at the buyer's expense, and must be agreed upon ahead of purchase. Local pickup is available. Please ask your questions before you bid! I reserve the right to end the auction early, as the bike is also listed for sale locally. 

Well you can't say that the seller isn't providing plenty of detail in that listing, and the $4,500 asking price frankly seems like a screaming deal for such a cool and unusual bike. The main issue here is that it's obviously very limited in terms of function: good looks aside, it's still pretty slow, especially on US roads if you no longer have the physique of a 17-year old.

-tad

End of an Era: 2006 Derbi GPR125 for Sale
Derbi August 18, 2017 posted by

Fast Bicycle: 2003 Derbi GPR-r 80cc

Derbis were never imported here in large numbers, but were a huge hit in Europe, and mixed it up with their Italian rivals at Aprilia in the 125cc two-stroke feeder series for MotoGP before being replaced with the 250cc four-stroke Moto3 bikes in 2014.

2003 Derbi GPR-r for sale on eBay

Though their world stage is gone, tiny, shrieking two strokes like this one continue to be the platform on which talented European kids get their first taste of road racing.

Originally a 50cc, this 2003 Derbi GPR-r now carries an 80cc big-bore kit, a bigger carb and recently-refreshed fairings, and two custom exhausts, one installed, and one that comes in a box.

From the listing:

Very nice 2003 Derbi GPR-r. I know the listing says Aprilia but ebay doesn't know what a Derbi is evidently. Runs great and is a hoot to ride-like a really fast bicycle! Upper fairing is mismatched with one half from an 02 and one half from an 03. Runs great and is very clean. Airsal 80cc bigbore kit with OKO 24 mm carb and a Metrakit SP pipe installed by previous owner. Combination runs great! 12,500 rpm and a top speed of 71 or 73 depending on which countershaft sprocket is installed (stock and one up included). Premix only as the oil injection pump was deleted prior to my acquisition of the bike. I put the graphics on to get it as close to original as I could. New fork seals and new tires. Fresh gear oil.A few extra bits too ( drivers saddle, new rear shock, owners manual, service manual). Ask questions before you bid-no returns. I will deliver up to two hundred miles one way for free. Anything else is on you. For sale locally so auction may end at any time if there are no bids.

You lookers are missing out on a real fun ride!

The seller says the bike will do either 71 mph or 73 mph, depending on which of the included counter sprockets you choose. That's barely fast enough to get yourself in trouble, which means you can focus on your line and body position without worrying too much about the police, or deer, or out-riding your talent.

The Buy-It-Now is just $2,000, which is a few hundred bucks less than the seller says he has tied up in the bike. Let us know what you think of this Spanish mini racer in the comments below!

Fast Bicycle: 2003 Derbi GPR-r 80cc
Derbi September 26, 2016 posted by

Spoiled Kids: 2006 Derbi GPR125 (REPOST)

Note:  This appears to be a relist of a bike posted by Ian back in 2003. Links updated, -MG 

derbi right

Hey, everything can't be a Mondial Piega.  Don't frown though, if Euro teens can have fun on these why can't we?   A dime a dozen on the other side of the Atlantic, titled street versions here are rare.

derbi left

It's got a title and more:

I bought this bike brand new in the crate and had it shipped state side at a great expense. It has just over 760 kilometers or 500 miles on it at the time of this writing. Hardly broken it yet.

These little 2 strokes came with a reliable Yamaha DT125 motor installed. This makes part access ever so easy. Has an electric start and trick under seat exhaust. Still have the nubs on the original tires.

I have done some modifications to the bike totally thousands of dollars.

Bike has been derestricted and re-geared. Removed all the emission restrictions. Installed a full Giannelli exhaust system. Changed out the non adjustable 28mm Keihin carburetor for a new tunable 28mm Dellorto carburetor. Still running a little rich for break in. Could use some fine tunning. Removed the air box and added a filter pod and Boyseen reeds. Took off the long and very ugly rear fender and made my own license plate and turn signal holder. Swapped out the rear turn signals. Added a trick little Daytona digital temp meter as the bike only had an over heated warning light. Not to partial.

Had all the black plastic body panels coated to look like carbon fiber. Can’t see this to clear in the pictures but it is really looks stunning. Changed out many fittings to aluminum and titanium. Installed a Metrakit light weight front disk.

I have all the stock parts, pipe, carburetor, rear fender, and front disk, air box, sprocket and a gasket set included. Have the owner and shop manual, extra key and tool kit too.

I love riding this bike around town but getting too old to be racing around on a 125. This bike is always a conversation piece. I was going to install a 170cc kit. But it is time for this bike to go to someone else to enjoy as I just don’t have the time to ride it anymore. Need to move on to other projects. Has clear Florida license and title, with the registration good until April 2015.

derbi mufflerderbi armderbi front wheel

Simply put, "tiny".

derbi close

If a Yamaha DT125 engine fits in there, would a Yamaha YZ125 engine fit?  That frame looks like it could handle a few more ponies.  I'm not so sure about the swing arm though.

The seller has a BIN of $5,000 5,800 or make an offer.

Click here for the listing.

Ian

(Marty G/Dallaslavowner for repost)

Spoiled Kids:  2006 Derbi GPR125 (REPOST)
Derbi April 13, 2016 posted by

Catalonian – 2003 Derbi GPR50 Malossi

The sight of any Derbi will bring a twinkle to the eye of the Spanish nationals among you, but this very racy Malossi replica, with title, gets these folks thinking rather impractical thoughts.  An historic Spanish company, Derbi was founded in 1922 near Barcelona, and made bicycles until 1950, then moved into motorcycles.  Concentrating on the smaller bikes, they also raced, winning Grand Prix championships in the 50, 80 and 125cc categories.

20160413 2003 derbi gpr50 malossi left

2003 Derbi GPR50 Malossi for sale on eBay

20160413 2003 derbi gpr50 malossi right

Doing a very passable impression of a larger machine, the GPR50 does it with a single cylinder and just 9 hp.  The 50 cc's are fed by a 14mm Dell'Orto carburetor, and power is transferred by a 6-speed transmission.  Suspension is modern with 35mm upside-down forks and rear monoshock.  Brakes are single disks, 260mm front and 220mm rear.  Unlike most 50's the Malossi is rideable by a 170 lb. adult, helped by the 17 inch wheels.  The full bodywork has a biposto seat and great graphics package.

20160413 2003 derbi gpr50 malossi front

This GPR50 looks super in red with checkerboard and shows just about 600 miles.  The owner is a collector and seems very knowledgeable - from the eBay auction:

You are bidding on a rare Derbi GPR 50 Malossi Replica with only 592 miles on the odometer. The Derbi 50 GPR 50 was a joint effort between Cagiva and Derbi with Cagiva designing the frame and Derbi providing the high revving two stroke engine.

Below is a list of key aspects of the Derbi GPR 50:

1) It has a clear Colorado title with all the original paperwork. The Derbi is located in Denver, CO.

2) I purchased the motorcycle from the original owner to add to my collection. Unfortunately, I have unexpectedly bought two additional motorcycles and I am now out of room and one motorcycle has to go and the Derbi drew the short straw.

2) The Derbi literally looks like it just came from the dealer's show room floor. It has always been properly stored in a heated garage its entire existence and maintenance has been performed based on time and not mileage. The battery is always on a trickle charger and is in perfect working condition.

3) The Derbi runs perfectly and absolutely everything works.

4) The original owner put two very small scratches on the bottom of the lower fairing as he was unloading the motorcycle from his truck. The scratches are covered up by a decal.

5) Despite its small 50cc two stroke engine, the 6 speed transmission will easily propel the Derbi to well over 60 MPH.

20160413 2003 derbi gpr50 malossi dash

Named for Malossi S.P.A., which makes racing and tuning parts for small bikes and scooters, the GPR  could be fitted out with engine and suspension to keep up with traffic on the freeway rather than just around town, with the known risk of shortening the life span.  Derbi survives today, having been purchased by Piaggio in 2001, and their line of smaller bikes now includes enduro and hypermotard bikes.  Since none are available here, the Derbi will continue to be a specialty, in this case an almost perfect and street legal rarity...

-donn

20160413 2003 derbi gpr50 malossi cockpit

Catalonian – 2003 Derbi GPR50 Malossi
Derbi January 16, 2016 posted by

Be the cool parent/relative: 2003 Derbi GPR 50 Malossi replica

It may be just after Christmas but this would still make a cool gift for someone who has a "rabid race kid" in the family.

derbi1

2003 Derbi GPR 50 on ebay

The Derbi GPR50 was a joint effort between Cagiva and Derbi that mated an excellent cagiva designed frame with a really good 50cc engine from Derbi.  The two stroke engine was a super slick water cooled six-speed little gem. It may have only put out 9 horsepower but produced a top speed of around 70 mph when new. Handling was excellent due to GPR 50's low weight (about 98 kils/218 pounds) combined with the cagiva designed frame, upside down forks and a good rear shock.

The GPR even comes with a cool storage unit where the gas tank initially appears to be that can hold a full sized helmet (see video link below), which means young squids can assure mom they won't forget their helment   Of course the fact that it looks like something a young Valentino Rossi would have owned/is waay sexier than your average scooter is a plus too.

A review of the GPR50 can be seen in the video posted below or via the link here.

The condition of the bike looks to be excellent, with no damage visible or evidence of being down or abused.

Gotta love the big tach as the center dial and the deals gap decal on the lower fairing, sign of someone who enjoys going though the twistys - Marty

derbi5

Here is what the seller has to say

  • Bought new to compete in the True Grit 50cc fun run held in the mountains of North Georgia.
  • Street legal motorcycle(check your state laws) that does over 50 mph very easily with my 170 pounds on board.
  • Mileage is correct and it has always been garaged.
  • It has a new battery and all original paperwork.
  • in the same class as the Honda MB5, NS 50 and Aprilia RS 50 but more rare.
  • In superb condition but there are 2 small scuffs on the fairing lowers under the decals.

derbi2

Is this little repli racer/scooter alternative worth the opening bid price of $1,300 USD?   I definitely think so - the last one of these we had on RSBFS had an opening bid of $2,500 USD. Sure it wont be as much fun to ride as the Derbi 125's we see occasionally but it would still be a cool addition to any collection (although it probably won't appreciate much in value).  And  if it was given as a late Christmas present to someone it would certainly cement the givers reputation as "the cool parent/uncle/other relative".

-Marty/Dallaslavowner

Be the cool parent/relative:   2003 Derbi GPR 50 Malossi replica




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