• Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines
• Specially machined cylinder heads allow use of stock length manifolds
• Includes S&S performance cylinder heads, S&S standard oil pump, flat top cast pistons, S&S 585 valve springs, forged rocker arms, 508 camshaft
• Made in the USA

Notes

• For '84-'99 Evolution Big Twin or '70-'90 custom chassis with alternator-style primary.
• Fuel and ignition systems not included, use existing carburetor (rejetting is required).
• EFI compatible - calibration required (must use aftermarket module or add-on tuner).