Gear set incl. auxiliary shaft and kickstarter pinion -BENELLI type GPR- Vespa V50, V90, 50N, PV125, ET3, SS50, SS90, PK S, PK XL1, PK XL2, ETS - (12/58, 13/42, 15/38, 17/37 teeth)

Benelli GPR and BULL – close-ratio smallframe racing gearboxes with custom gearing

Transmission components from Stefano Benelli have rightfully earned an excellent reputation in the racing scene.
If you're looking for reliable racing-grade gearbox technology, you'll find it here.
Hardened to an average of 60 HRC, Benelli parts offer the perfect balance between sufficient hardness and the necessary elasticity to withstand the extreme stress inside a racing engine over the long term.

BENELLI GPR
The GPR version offered here is a special close-ratio racing gearbox developed for maximum drive on the racetrack. The first three gears are longer than stock, while the fourth gear is significantly shorter. The spacing between gears is reduced starting from second gear. The result is a sporty close-ratio gearbox that is only slightly shorter overall than a stock transmission (at 9000 rpm in fourth gear, the difference is about 5 km/h).
The significantly stronger gear wheels and auxiliary shaft make this gearbox ideal for race use or for performance-oriented riders whose engines benefit from close gear spacing.

(12/58, 13/42, 15/38, 17/37 teeth)

The Benelli GPR gearbox is a matched set and cannot be combined with gear wheels from other manufacturers. It comes with a dedicated kickstart gear, which is included in the kit.

BENELLI BULL
The Benelli BULL complete gearbox includes the full GPR set but also comes with a reinforced version of the main shaft including selector arm, shift spring, detent balls, spacers and circlips. The main shaft is delivered fully assembled and pre-adjusted.

(US)