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Spool Custom CP Extreme Boost Forging 2618 Forged Pistons
Product Features:
All piston manufacturers have a specific piston to bore clearance that they recommend
rails are supplied with machined fitting kits ensuring a quick and easy upgrade
Mitsubishi 4G63 100mm 4340 Stroker Crankshaft
Spool Mitsubishi 4G63 Stroker Crankshaft - 94mm WRX STI Spool Custom CP Extreme BoostMitsubishi 4G63 94mm 4340 Stroker Crankshaft With the increased cubic capacity from the 94mm stroker crank, increases in torque and low to mid range power are achievable. Boost will come on earlier in the rev range and peak power will increase. Full Forged 4340 Nitrided, Balanced and Full Counter Weight Crankshaft The 4G63 engine in its factory form has a 85mm bore and 88mm stroke, giving a displacement of 1997cc. Using the 94mm stroker crank,
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