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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
Honda CRF 50 (2004-2022)
To upgrade OEM: 21121-1137 / 21121-1138
Kawasaki GPZ 400 R (ZX400 D1-D4) (1985-1988)
Yamaha XS 750 (1977-1979)
Yamaha FJR 1300 (2006-2013)
Big Bore Cylinder Barrel Kit: Aprilia SR 50 (2012-2014) Triumph Speedmaster 790 Honda CRF 50 (2004-2022)Brand new big bore cylinder barrel kit to fit: Aprilia SR 50 Motard AC (2012 2014). This cylinder kit has been manufactured to upgrade the original top end on an Aprilia SR50 50 to 70cc for the years and models shown above. The kit includes the cylinder barrel jug, head, piston kit and gaskets. To upgrade from 50cc to 70cc.
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