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Derbi posted by

Spoiled Kids: 2006 Derbi GPR125 (REPOST)

Warning!

This post is in our archives. Links in this post have been updated to point to similar bikes available to bid on eBay.

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)

3 Comments

  • Florida title while living in Cal.? That’s one way to get around CA’s draconian, nonsensical 2 stroke rules.

  • The DT125 engine has more in common with the TZR 125 engine than a YZ which would be a bad choice for a street engine gearing way to short I have a 06 YZ 144. You can get big bore kits for these engines from like polini and Athena think you can bump it up to a 160. With the mods done to it, it should all ready be around 30 hp to the rear wheel now. Sounds like the owner has it tuned well all ready DT / TZR 125 engine parts are easy to come by. This same bike was also sold in the UK under the Gilera name just difference in colors and graphics was the only changes.

  • Best mods on these were getting it as close as possible to TZR 4DL spec (34mm Dell’Orto carb, higher compression, other cylinder etc.). The 4DL TZRs were homologated with 32 hp in Europe and delivered around 26-27 to the rear wheels from 125cc. The 170cc Athena kits unfortunately have very tame port timing and while low end torque is definitely increased max hp usually is not. Quality is great, though, and performance with Athena kits can be increased by a great margin by changing port timings for longer exhaust duration.
    The YZ engine does not fit (at least not without modifying the frame) and as Joe mentioned wouldn’t be a good choice for street riding.

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