CSR 124″ High Compression Big Bore Kit for Harley M8 Models (107″ to 124″)

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$1,699.99

Upgrade your Milwaukee-Eight 107″ engine to a full 124″ of displacement with the CSR 124″ High Compression Big Bore Kit. This American-made kit includes precision cylinders, forged pistons, Total Seal rings, and Cometic gaskets, delivering increased torque and throttle response while allowing the use of many existing camshaft combinations. Designed for riders who want serious power without requiring head work.

 

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Description

CSR 124″ High Compression Big Bore Kit

The CSR 124″ High Compression Big Bore Kit is one of the best cylinder kits available for the Milwaukee-Eight platform. This kit upgrades a factory 107″ engine to 124″ and works well for riders who want more power while continuing to use their existing camshaft.

In addition, head work is not required for installation, although it can be added later for even more performance. The kit includes cylinders, pistons, rings, head and base gaskets, and a complete top-end rocker box gasket kit, making it a true bolt-on big bore solution.

This kit pairs exceptionally well with the following camshafts:

  • Zipper’s Red Shift 468 Cam

  • S&S Cycle 475 Cam

  • Wood 22XE Cam

  • T-Man 216 Cam

  • Star Racing 30/30 Cam

Optional Add-Ons

For best results, many customers choose to add the following supporting components:

  • Feuling 3007 ARP Head Bolt Kit or S&S 900-1006 Head Bolt Kit

  • T-Man Cylinder Head Breather Valves or Feuling Cylinder Head Breather Valves

  • CSR 62mm Throttle Body

  • Zipper’s 7.1 GPS High-Flow Injectors

Additional information

Add Head Bolt Kit:

No Thanks, Feuling 3007 ARP Head Bolt Kit (+$359), S&S 900-1006 Head Bolt Kit (+$159)

Add Cylinder Head Breathers:

No Thanks, T-Man Breather Valves (+$479), Feuling 3250 Breather Valves (+$469)

Add Throttle Body:

No Thanks, CSR 62mm Throttle Body + Refundable Core Fee (no wait) (+$1140), CSR 62mm Throttle Body – No Core Fee (send core first 1-2 week lead time) (+$790)

Add Injectors:

No Thanks, Zipper's 7.1 gps High Flow Injectors (+$299)

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