O.S.SPEED B2103 TYPE R
1BP00 TYPE R features,
Ø The long-stroke off-road engine put a high value on beasty power in mid-high speed range.
Ø The crankcase, carburetor, cover plate, crankshaft and inner head are designed new.
Ø All the parts are interchangeable to those of TYPE S’s.
Ø A newly designed 5-port cylinder & piston set (5 scavenging port+ 3 exhaust port)
Ø A standard round type outer head