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Your cart is empty.Technical Specs:
- Alloy: Hypereutectic 390
- Bore: 4.030''
- Crankshaft Stroke: 3.480''
- Connecting Rod Length: 5.700''
- Deck Height: 9.025''
- Compression Height: 1.561''
- Pin Size: 0.9272''
- Pin Location: Centered
- Flat Top: -7cc 2 Symmetrical Valve Reliefs
- Intake Valve Relief: 0.280'' Depth / 2.168'' Diameter
- Exhaust Valve Relief: 0.280'' Depth / 2.168'' Diameter
- Top Landing Height: 0.275''
- Ring Grooves: 5/64'' Top; 5/64'' Middle; 3/16'' Bottom
- Gram Weight: 535/145
- Compression Ratio: 10.9:1 w/58cc Heads; 10.4:1 w/62cc Heads; 10.2:1 w/64cc; 9.0:1 w/76cc Heads
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