Valve, Exhaust 850cc 998cc 1098cc

Exhaust Valve, Wide Collet Groove

Early Large cotter groove exhaust valve. Most small-bore engines seem particularly prone to burning valves, it is highly recommended to replace the exhaust valves when you do a valve job! This 1.0″ valve fits most early 948cc, 998cc and 1098cc engines.

These have the wide rectangular groove 8.65mm (.340″) to accept the original 2A11 cotters