Motorcycle Transmission

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Transmission

Secondary Transmission / Output Shaft long - GY6 50cc 139QMB

Rear Sprocket AFAM 51 teeth - 420 Beta RR / Caballero

Primary Transmission Doppler 15/50-13 (+20%) CPI / Keeway

Roller bearing / needle bearing (HK1516) Piaggio 125/150/180

Output shaft type A, B, Piaggio old engine, with nut, cap, split-pin (Ref. 100240090)

Primary gear kit Polini, Piaggio Zip SP 2000 Zip Cat II, Vespa ET2 (2000), Zip SP 2000 (16/37)

Blue steel washer for intermediate shaft Minarelli, 14x29x1mm

Primary gear shaft (clutch) CPI - China 2-stroke, CPI, 13 teeth, version 1

Intermediate gear shaft (13/52) - China 2-stroke, CPI, Keeway

Retainer Plate for sprocket 11 teeth special Derbi Euro 2 / Euro 3

Driveshaft RMS Vespa PX / PXE 125 - 200cc

Primary Transmission Polini 15/38 (gear ratio = 2.53 / +22.9%) Vespa ET2 98 / LX 50cc

Chain Kit AFAM 12x50 428 Beta 50 RR Factory 2005 - 2013

Primary Transmission Polini 24/61 helical Vespa 125 PK / Primavera

Front Sprocket 11 teeth Derbi Euro 3 (D50B0)

Gear Selector Shaft Derbi Euro 3 (D50B0)

Lever for gear selector shaft Derbi Euro 3 (D50B0)

Chain Kit 12x53 - 420 d=108mm 6 holes Derbi Senda SM / DRD

Chain Tensioner 5x0.80mm MBK

Chain Tensioner with locking nut Nylstop MBK

Secondary Transmission 14-41 Doppler Yamaha Aerox / BW's

Primary Transmission Doppler 15-50 Yamaha Aerox / BW's

Primary Transmission Doppler 14-42 Yamaha Aerox / BW's

Retaining Plate f. sprocket Derbi Euro 2 / Euro 3

Pedal Spacer Ring MBK 51

Rear Sprocket 56 teeth MBK 51 (Grimeca rim)

Rear Sprocket 48 teeth MBK 51 (Grimeca rim)

Chain Kit AFAM 12x53 Aprilia RS/RX/RS4 2006 - 2010

Gearbox Minarelli AM6 1st series

Secondary Transmission 16/41 Top Performances Yamaha Aerox / BW's

Wheel Axle / Driveshaft reinforced Polini Piaggio NRG / Typhoon after 1998

Chain Iris standard 106 links size 415

Chain Iris standard 120 links size 415

Chain Iris Racing super reinforced 120 links size 415 moped

Chain Iris standard 108 links size 415

Chain Iris reinforced 108 links size 415 gold

Chain Iris reinforced 106 links size 415 gold

Gearwheel 6th gear primary shaft Top Performances T26 AM6 V1

Secondary Transmission Polini 16/47 Piaggio NRG after 1998

Gear Shift Cam Top Performances

Chain Guide Doppler Derbi / Aprilia / Gilera purple

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC purple Beta RR 50

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC purple Beta RR 50

Front Sprocket Cover / Chain Guard Doppler alu purple Minarelli AM6

Chain Guard reinforced Derbi Senda / Aprilia SX / Gilera SMT aluminium black

Shift Drum Lock Lever Kit Generic / CPI / KSR

Chain Tensioner Roll Derbi Senda

Chain Guide Derbi Senda red

Gear Selector Fork left secondary shaft type AM6 Generic / CPI / KSR

Gear Selector Fork primary shaft type AM6 Generic / CPI / KSR

Rear Sprocket steel Beta RR 50 Afam 60 teeth - 420

Shift Drum with forks and bolts Generic / CPI / KSR

Gear Selector Shaft Generic / CPI / KSR

Clutch Cable Holder Derbi STR8 Black

Clutch Cable Holder Derbi STR8 Purple

Clutch Cable Holder Derbi STR8 Red

Clutch Cable Holder Derbi STR8 Orange

Clutch Cable Holder Derbi STR8 Gold

Clutch Cable Holder Derbi STR8 Neochrome

Clutch Cable Holder Derbi STR8 Carbon

The gearbox - tuning via gear ratio

The complex world of gear ratios