129 Inch Big Bore Kit Black Cylinders / Highlighted Fins For 17-23 M8 with 107 Inch engine

£290.37 OFF
S&SSKU: 974960
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Price:
Sale price£1,315.62 Regular price£1,605.99

Condition: Brand New
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Description & Size Guide

2102cc kit. Converts the 107 Inch engine to 129 Inch. Largest possible 4.320 Inch bore bolt-in big bore kit. Stroker flywheels not required. Works with stock crankcases, case boring is not required, stock flywheels, stock heads and retains stock engine height. Kit includes a forged 4.320 Inch big bore piston kit, black wrinkle powder coated 4.320 Inch big bore cylinders, 2 MLS (Multi-Layer-Steel) .030 Inch head gaskets, 2 cylinder base gaskets, 4 cylinder dowels and an S&S cubic inch cam cover batch. Black powder coated finish to match OEM finish. Note: For the 132 Inch kit (to convert 114 Inch engines) S&S measured 135.51HP and 145.83TQ with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit. Note: Tuning of fuel injection and ignition may be required. Note: S&S advises 576972 S&S head bolt kit for all big bore applications. Fitment: 17-23 M8 with 107 Inch engine

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