S&S Cycle Cylinder & Piston Kits — Harley-Davidson Street Glide, Softail Fat Boy 114, Road King Special (2017-2026)
S&S Cycle front cylinder and piston kit for 2017+ Harley-Davidson Milwaukee-Eight (M8) engines, featuring a 4.250-inch bore with a matched piston. Built to OEM-quality standards for reliable performance in the modern M8 platform.
Features
- 4.250 inch bore front cylinder
- Matched piston included
- Designed for 2017+ M8 engines
- S&S Cycle OEM-quality engineering
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 910-0734
- Bore Size: 4.250 inch
- Position: Front cylinder
- Application: 2017+ Milwaukee-Eight (M8)
- Weight: 1 lb
- Category: Engine Components / Piston Sets
Fitment
Fits 2017 and newer Harley-Davidson Milwaukee-Eight (M8) models.
Frequently Asked Questions
Will this fit my Twin Cam Harley?
No — this kit is engineered specifically for 2017+ Milwaukee-Eight (M8) engines. Twin Cam owners need a different S&S Cycle bore kit.
What's included in the kit?
The front cylinder assembly and a matched piston designed for the M8 platform.
Do I need a rear cylinder kit too?
This is a front cylinder kit only. Order the matching rear cylinder and piston separately if you want a full top end.
Is professional installation required?
Yes — cylinder and piston replacement is an engine teardown job requiring machine shop precision and specialized tools. Professional installation is highly recommended.
| BRAND | S&S Cycle |
| TYPE | Piston Sets - Powersports |
| SKU | T14-662018 |
| WEIGHT | 1.0 lb |