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S&S Cycle 910-0844A Big Bore Cylinder Kit Wrinkle Black - 129 M8

Manufacturer

Picture for manufacturer S&S Cycle

Part Number

910-0844A
5 reviews
Sale Price

$1,643.95

1 left at this price

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Usually delivered within 2 days

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Product Details

The S&S Cycle 910-0844A is a high-performance 129 cubic inch big bore cylinder kit designed for Harley-Davidson M8 engines. This kit provides the largest displacement increase possible with a drop-in installation, taking 107" engines to 129" and 114" engines to 132" for significantly improved power and torque.

Key Features:

  • 4.320" bore size with 4.375" stroke length
  • 11.0:1 compression ratio for optimal performance
  • Wrinkle black finish without highlighted fins
  • Works with stock crankcase—no case boring required
  • Multi-Layered Steel (MLS) head gaskets included
  • Retains stock engine height and bolt pattern
  • Original engine serial numbers are retained
  • Complete kit includes cylinders, pistons, rings, and gaskets

This big bore kit is designed for street riding applications and offers easy installation without the need to split cases. Not compatible with VVT (Variable Valve Timing) models. Professional installation and proper tuning are recommended for optimal performance.

Overall experience was good until we had to return the item because it wouldn't work with the seat we had. Problem is that when we tred to get the specs on the item you didn't have any of the measurements available. So I was told that if it didn't work I could retun it. When I did you said it was because I ordered wrong so I would be charged to return it. It was wrong because you didn't have any info on the actual size and the only way to see if it would work was to order it.

Excellant

All went well

Awesome

EXCELLENT TRANSACTION!!!! REPEAT CUSTOMER!!!

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