S&S Cycle Flywhl Assy 4-5/8" Str Full Width WP ME1
Description
The crankshaft is the heart of any performance engine and S&S has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, these crankshaft assemblies for the Milwaukee Eight are the best of the best to build your high performance engine around. Made out of heat treaded 4140 material, harder and more than twice as strong as stock. The stronger assembly eliminates the need to weld the crankpin. The High Strength connecting rods are designed with Finite Element Analysis to eliminate weak spots and handle more power. Consistent balance and precision machining makes them capable of higher RPM and perfect for gear drive cams. Crankshafts that have connecting rods with tapered piston wrist pin ends can be used with stock or S&S pistons. The full-width version can only be used with S&S pistons and S&S Big Bore cylinder kits. Crankshafts with 4 5/8" stroke can only be used with pistons that are designed for this stroke.
4 5/8" stroke gives:
- 113CI from a 107CI engine with stock 3 15/16" bore
- 117CI from a 114CI engine with stock 4 1/64" bore
- 121CI from a 117CI engine with stock 4 5/64" bore
- 131CI with an S&S 4 1/4" Big Bore kit
- 136CI with an S&S 4.320" Big Bore kit
The biggest just got even badder! These all new high compression 136 and 132 Big Bore kits take performance to the next level, delivering harder hitting torque, increased horsepower, and an aggressive throttle response. With more compression comes more power, giving your ride the punch it needs to dominate the road. Designed as the largest bolt-on kits we’ve ever offered, these high compression setups work seamlessly with stock crankcases, so there’s no need for machining, and your original engine serial numbers remain intact. The factory matching powder coat finish keeps your bike looking clean and stealthy. These kits also maintain stock engine height for easy installation and come complete with gaskets, making the upgrade process hassle free. If you’re looking to unleash the full potential of your machine, the 136 and 132 high compression Big Bore kits are your ticket to more power, more performance, and more thrill. Available in multiple finishes to match your engine, this upgrade is built for riders who refuse to settle for anything less than the best.
Specifications
- Brand: S&S Cycle
- Product: Crankshaft Parts
Fitment
4 5/8" Stroker flywheels for custom-build High Performance motorsNote: These do not have the same connecting rod length as in 121CI VVT engines 2023 to present, Complete flywheel assembly with full width piston wrist pin ends and balancer gear installed
Flywhl Assy 4-5/8" Str Full Width WP ME1
Part Numbers
Item Number: ZPN788977
Zodiac Part Number: 788977
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Enter your UK postcode for a quick estimate before adding to your basket. Enter your postcode to check delivery.
This estimate is for the selected item and quantity on their own. Shipping for your complete order is recalculated in the basket and shown again at checkout before payment. Your full order is recalculated in the basket and confirmed at checkout.
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On very rare occasions, we do make mistakes on shipping item. Please contact us when this happens and we will make it right. We may or may not require the original item to be returned to us.
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