S&S CYCLE Big Bore Piston Kit - 128" - +.010 - M8 920-0142
Part Number: 09106522S&S CYCLE
- SKU:
- 09106522
- MPN:
- 920-0142
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
Description
If you're pushing your M8 to 128 cubic inches, your factory pistons are holding you back. This S&S Cycle Big Bore Piston Kit delivers the strength and precision your build demands, with forged internals engineered to handle sustained high-RPM performance and boost pressure. The +.010 oversize bore specification ensures proper ring seal and compression consistency across the entire power band.
Complete piston assemblies from S&S Cycle are sized and balanced as a set, eliminating guesswork during engine assembly and reducing the risk of detonation or uneven combustion. Whether you're building a street beast or a track weapon, this kit gives you the reliability of OEM-quality engineering with big-bore power.
- Big Bore: 128 cubic inches
- Oversize spec: +.010
- Platform: Harley M8
- MPN: 920-0142
- Kit includes: Pistons, rings, wristpins, clips
- Material: Forged high-strength alloy
- Compression ratio: Approximate (varies with cylinder length)
- Installation: Professional engine assembly recommended
- Set balanced: Factory-matched pair
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