Studio : G2 ERGONOMICS Publisher : G2 ERGONOMICS Product Description Spacer 50 carb learning aid for beginners who ride smaller-cc motorcycles slows down the rev while auto-clutch engages, eliminating any lurch that may intimidate beginning riders limit maximum opening to 1/4, 1/2 or 3/4 throttle; helps rider learn control faster easily installed through the carburetor top cap 0
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