The latest part to come out of the R&D department over at Athena is this Racing 50cc cylinder kit which features the same power valve system currently used on their AM6 70cc kits. Suitable for all Derbi D50B0 engines this Racing 50cc barrel carries the usual Athena traits with having a perfectly finished aluminium Nicasil plated barrel and a surface treated piston guaranteed to give excellent performance in all conditions.
The power valve is controlled by exhaust gas pressure and is supplied with different strength springs allowing you to control when the power valve opens. This allows for a good setup on many exhaust systems giving great power right through the rev range thanks to the varying exhaust port duration. So you get all the benefits of this high end racing cylinder at a high RPM whilst improving power at low RPM's too. This gives a smooth flowing ride allowing faster lap times thanks to the added power and torque at low - mid RPM. Supplied with all components needed to fit to bikes using D50B0 engines, like Derbi Senda, Aprilia RS 50 etc
AD/P4004105100008 - RRP £404.40
