High quality Polini 4 petal carbon fiber reed valve. Comes with Polini Blue reeds that are 0.30mm thick. Also comes with one gasket as well as an optional reed stuffer.
This does not fit Puch Gilardoni cylinders. It is also not designed to work with Minarelli AM6 engines. This is a true Derbi reed valve.
Bolt pattern is 60mm x 39mm
Fits so many models-
APRILIA : RS 50 dal 2006 -> (DERBI D50B) - RS4 50 (DERBI D50B) - RX-SX 50 dal 2006-> (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, SMT dal 2006-> (DERBI D50B) - SMT 50
VALENTI RACING : RME, SM (DERBI D50B)