BOYESEN motorcycle / quad 2-stroke competition valve slats YAMAHA TRI-MOTO, IT, YZ LC, DT 125, 200 & 80cc, HONDA CR 80cc ...

Here are the BOYESEN valve slats for YAMAHA motorcycle IT 125cc, YAMAHA DT 200cc from 1987 to 1990, YAMAHA YZ 80 and YZ 80 L from 1980 to 1984, YAMAHA YZ 125cc LC from 1975 to 1979, QUAD TRI-MOTO 125cc, motorcycle HONDA CR 80cc from 1982 to 1985, HONDA CR 80cc EXPERT from 1996 to 2002 and FANTIC 245cc motorcycle. These competition valves will allow you a very good gain in power both in terms of torque and at high speed.

The patented BOYESEN system uses 2 slats on each side! A thinner for the couple (resonant frequency at low speed) and a very rigid for high speeds (frequency in very high speeds). These valves are delivered with an ultra complete manual (carburettor adjustment etc etc,) Stops special blades removed and stickers.

Mounts on :

FANTIC 245 245 cc 1936/2022
FANTIC 2T TRIAL / 245 247 cc 1936/2022
FANTIC 305 305 cc 1936/2022
FANTIC 307 TRIAL 307 cc 1936/2022
HONDA CR 60 cc 1983/1985
HONDA CR R 80 cc 1982/2002
SUZUKI PE 175 cc 1983
TM ALL MODELS 0 cc 1936/2022
YAMAHA DT 200 cc 1987/1990
YAMAHA DT 250 cc 1971/1973
YAMAHA DT R 200 cc 1987/1990
YAMAHA IT 125 cc 1936/2022
YAMAHA IT 175 cc 1979
YAMAHA RT1 RT2 / RT3 360 cc 1971/1973
YAMAHA TRI-MOTO 125 cc 1982
YAMAHA YT TRI MOTO 125 cc 1982
YAMAHA YZ 100 cc 1936/2022
YAMAHA YZ 125 cc 1975/1979
YAMAHA YZ 175 cc 1936/2022
YAMAHA YZ L 80 cc 1980/1984
YAMAHA YZ LC 80 cc 1980/1984