Seller notes

Applicable: For Yamaha RD350 1973-1975 Description: Requires longer head studs when used with RD250 (Yamaha part # 90116-08064-00) Requires RD350 Cylinder Studs If Used With RD250 Cylinder and Piston Kit for Yamaha RD350. US/UK Specification 64mm Bore. The exhaust port is 38mm wide and 29.5mm from the cylinder top. (see pics) These can also be used on the 1973-1975 RD250s to give yourself a bit more power. The exhaust and intakes fit.You need to replace the cylinder head studs with the slightly ...

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