Of all measures to increase horsepower and torque of your factory engine, stroker flywheels are among the most effective. Boost your stock displacement 61” or 74” Knucklehead, Panhead or Shovelhead up to 84 cui or 1380cc (@ 3-7/16” bore) and experience arm stretching performance and a significantly increased fun factor.
Especially with original engine cases these 4.5” stroker flywheels are the way to go. If any, they require only minor modifications for installation and unlike with machining for Big Bore cylinders cases become not weakened. Consequently, engine life expectancy is near stock.
All versions are of Torque Monster type with thick left flywheel as original and require special stroker pistons, which are also available.Recommended for qualified mechanics only, because the flywheels need to be balanced and clearances in engine cases need to be checked.
- Ø 8-1/2”
- stroke: 4-1/2 ”
- 1380 cm³
S&S Stock Bore Stroker Pistons - for Knucklehead, Panhead and Shovelhead
Jims Crankshaft Truing Tools
Flywheel Truing Stand
IC Flywheel Assembly Jigs
Thor Soft Hammers
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: firstname.lastname@example.org