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Quality gearbox to start again on a healthy and new transmission element as at the origin!
Here is a 100% complete gearbox of very good quality, it is delivered pre-assembled, all you need to do is put it on an engine! It preserves the original shapes, machining, sizes, teeth…! 
Ideal in the event of a gearbox breakage, especially when you see the price of a complete original box (often 700 to 1,500 euros) or the price of a major brand box (METRAKIT, DOPPLER, BIDALOT ...) . 
Mounts on DERBI euro 1, 2 and 3 and 4.
TEKNIX gearbox ratio:
-1st 34/11
-2nd 30/15
-3rd 27/18
-4th 24/20
-5th 22/23
-6th 22/23
Mounts on all DERBI euro 2 and euro 3 engines, example :
APRILIA: RS 50 dal 2006 -> (DERBI D50B) - RS4 50 (DERBI D50B)
BULTACO: ASTRO 50 - LOBITO 50
DERBI: GPR 50 - GPR 50 Nude - GPR 50 RACING - GPR 50 racing dal 2006-> (DERBI D50B) - SENDA 50 DRD dal 2006-> (DERBI D50B) - SENDA 50 DRD R - SENDA 50 DRD SM - SENDA 50 EXTREME - SENDA 50 EXTREME SM - SENDA 50 R
GILERA: GSM 50 - H @ K - ZULU (2001) - RCR 50 - RCR 50 - SMT dal 2006-> (DERBI D50B) - SMT 50
VALENTI RACING: RME-SM (DERBI D50B)
Reference: 33000359
A gearbox used in competition because it is very well spread for large configurations (70cc and more) and moreover it is one of the best value for money on the market! In addition to this, you need to know more about it.
Reference: 6250005
A very good competition gearbox with a really affordable price!
Reference: 449849
A gearbox better staged than the original for guaranteed performance. A price certainly high but a technicality and quality materials for a solidity foolproof.
Quality gearbox to start again on a healthy and new transmission element as at the origin!
