Motorcycle Transmission

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Transmission

Swingarm Slider Derbi Senda / Gilera SMT

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Aprilia SX 50

Rear Sprocket AFAM 51 teeth - 420 Beta RR / Caballero

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

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

Output Shaft type A, B, Piaggio old with nut, cap, split-pin

Primary Gears Polini Piaggio Zip / Vespa ET2 after 2000

Washer intermediate shaft Minarelli 14x29x1mm

Primary gear shaft (clutch) CPI 13 teeth version 1

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

Sprocket Retainer Plate 11 teeth Derbi Euro 2 / Euro 3

Driveshaft RMS Vespa PX / PXE 125 - 200cc

Primary Gears Polini 15/38 2.53 / +22.9% Vespa ET2 98 / LX 50cc

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

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 with locking nut Nylstop MBK

Rear Sprocket 54 teeth MBK 51S (Grimeca rims d.98mm)

Rear Sprocket 42 teeth MBK 51S (Grimeca rims d.98mm)

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

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

Primary Gears 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

Secondary Gears 16/41 Top Performances Minarelli / Aerox

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 Gears Polini 16/47 Piaggio NRG after 1998

Gear Shift Cam Top Performances

Chain Guard Derbi Senda aluminum black

Chain Kit Afam 13x53 Aprilia / Derbi / Gilera

Sprocket Aluminum 56 Teeth for sprocket holder Doppler Open

Sprocket Aluminum 52 Teeth for sprocket holder Doppler Open

Secondary Gears 13/42 Top Performances Minarelli

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

Rear Sprocket steel 53 teeth - 420 Doppler Origin Beta RR (02 - 05) and Caballero

Chain Guard reinforced Derbi Senda / Aprilia SX / Gilera SMT 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 AM6 Generic / CPI

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

Gear Selector Fork primary shaft AM6 Generic / CPI / KSR

Rear Sprocket steel Beta RR 50 Afam 60 teeth - 420

Shift Drum with forks and bolts Generic / CPI / KSR

Clutch Cable Holder Derbi STR8 Black

Chain Guard Beta RR 50 / 125

The gearbox - tuning via gear ratio

The complex world of gear ratios