Stage6 Streetrace 86/88cc cylinder kit for Minarelli AM6 engines.

The Streetrace cylinder made its name on scooters, Stage6 has taken the knowledge gathered and applied it to geared mopeds. The 86/88cc cast iron cylinder has a 50mm bore, 5 transfer ports and a simple exhaust port. A twin ring piston is included along with a high compression aluminium cylinder head. Performance is increased from the bottom to the top of the rev range.

A 26mm carburettor, mid-race exhaust, reinforced clutch and racing crankshaft are recommended. A 3% oil mixture is also recommended.

Setup:
86cc: crankshaft with 44mm stroke/ 85mm conrod without the spacer.
88cc: crankshaft with 45mm stroke/ 90mm conrod with the spacer.
(If you use a 90mm conrod crank you will require M7x120mm cylinder studs and a little more room in the crankcase for the conrod may be required.)

As usual with big bore Streetrace cylinders, Stage6 has stamped "49ccm" on the cylinder for official amusement.

Stage6 S6-7118820