Gear box kit. STD or close Ratio YX150/160. 2V & 4V. Full kit. Bearing or needle roller type

Replacement gearbox kit.

Our new gearbox kit now works with all of the defferent generations of YX engine whether its older ball race or needel roller originally.

N-1-2-3-4 all up positive response

Kit includes.

• Selector
• Main shaft
• Secondary shaft.

Please see red gears are different to standard

Close ratio             Close ratio lower 4th       Standard              Endurance tall 1st

1^st gear 13/34        1st gear 13/34                  1^stgear 11/36         1st gear 14/32

2^nd gear 17/29        2nd gear 17/29                 2^ndgear 16/ 31       2nd gear 17/29

3^rd gear 17/23        3rd gear 17/23                  3^rdgear 17/23         3rd gear 17/23

4^th gear 20/21        4th gear 19/21                  4^th gear 20/21         4th gear 20/21