Cylinder Italkit Derbi Euro2 80cc C44,9 - D47,6 -12mm pin CK.12.756.GR

After a long study and focus, this set allowed us to achieve a power of 25hp.

The pack consists of:

The two-piece cylinder head has a hemispherical combustion chamber with a volume of 6.20cc and allows obtaining a compression ratio of 13.90:1, with a recommended squich value of 0.85mm.
The cylinder diameter is 47.6mm. It has 6 transfers and an exhaust port with two boosters.
The piston (diameter 47.55) has a molybdenum disulfide treatment to reduce friction losses and a 0.8mm thick segment with a 12 mm bolt
Gaskets, studs and nuts

Cooling (and consequently reliability) was especially taken care of with well-studied water passages.

A competition exhaust, a 28 or 30mm carburetor and an internal rotor ignition to obtain maximum results.


Valid for DERBI EURO 1 & 2 :

BULTACO Astro Enduro 50cc
BULTACO Lobito 50cc supermoto

Derbi GPR 50 Nude until 2004 (EBS050)
Derbi GPR 50 Racing until 2004 (EBS050)
Derbi GPR 50R Replica 2001-2004
Derbi GPR 50cc 1998-2001
Derbi Senda 50cc until 2000 (tubular chassis)
Derbi Senda 2000 50cc until 2004 (double beam chassis) Euro2
Derbi Senda DRD supermotard until 2000 (tubular chassis)
Derbi Senda DRD supermotard until 2004 (double beam chassis) Euro 2
Derbi Senda Enduro until 2000 (tubular chassis)
Derbi Senda DRD R enduro until 2000 (tubular chassis)
Derbi Senda DRD R enduro until 2004 (double beam chassis) Euro2
Derbi Senda SM until 2000 (tubular chassis)
Derbi Senda SM until 2004 (double beam chassis) Euro 2
Derbi Senda X-Race 2000 until 2004 (double beam chassis) Euro 2
Derbi Senda (double beam chassis) Euro 2
Derbi Senda SM X-Trem until 2000 (tubular chassis)
Derbi Senda SM Euduro 50cc (tubular chassis)
GILERA SMT SM 50cc (tubular chassis)
GILERA Sioux Enduro 50cc
GILERA Zulu Enduro 50cc

And more models