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Product Details
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O.S. MAX 91RZ-H DH Ring
Designed specifically for scale mechanics, the new 91RZ-H provides all the advantages of its 91SZ-H stablemate in terms of power and controllability but with the convenience of a cast cylinder head to suit scale machines such as the Hirobo range.
Specification Weight: 623g (21.90oz) Displacement: 14.95cc (0.91cu.in.) Bore: 27.70mm (1.090in.) Stroke: 24.80mm (0.976in.) Power Output: 3.3PS/15000RPM Practical RPM: 200-16000RPM
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