BMW Boxer 2-Valve Engine

Twinshock Models: 
R45 78-85 -- R60/5 69-79, R60/6 73-76, R60/7 76-78 -- R65 78-85, R65LS 81-85 -- R75/5 69-73, R75/6 73-76, R75/7 76-77 -- R80/7 77-84, R80RT 82-84 -- R90/6 73-76, R90S 73-76 -- R100/7 76-78, R100S 76-80, R100RS 76-84, R100RT 78-84, R100CS 80-84, R100 80-84, R100T 78-80
Fork diameter 36mm Shock length 330mm


Monolever Models:
Street: R65 85-93, R80 84-92, R80RT 84-94, R100RT 87-96, R100RS 86-92
Gabeldurchmesser 38,5mm Federbeinlänge 409mm 
Dirt: R80G/S, R80ST 82-84, R65GS 87-92
Fork diameter 36mm, Shock length GS 365mm, ST 350mm 


Paralever Models:
Street: R80R 92-96, R100R 94-96, R100R Mystik 94-96
Gabeldurchmesser 41mm Federbeinlänge 475mm
Dirt: R80/100GS 87-90, R100GS Paris Dakar 89-90, R80/100GS Paris Dakar 90-96
Fork diameter 40mm, Shock length 495mm