Description
The S&S Cycle T143 is a complete long-block engine designed to unlock genuine performance gains in your 2006–2017 Harley-Davidson Dyna without compromising reliability or requiring frame modifications. Built with CNC-machined B3 cylinder heads, S&S super stock crankcases, and optimized cam geometry, this engine delivers the flow characteristics and mechanical precision that serious riders demand. Whether you’re chasing stronger mid-range punch or building a custom setup, the T143 gives you a factory-quality foundation that integrates seamlessly into your existing chassis.
Key Performance Features:
- CNC-machined B3 cylinder heads
- S&S super stock crankcases
- S&S 635 gear-drive cams
- 1.725:1 rocker arms
- .674″ total valve lift
- High-flow oil pump (TC3)
- Three-piece flywheels
- Premium performance tappets
- Reed breather valve equipped
- Rear-routed oil pickup tube
- Stainless steel oil lines
- Two-bolt exhaust flanges
- Wrinkle black finish
- Bolt-in installation
- No frame modifications needed
- Fits 2006–2017 Dyna models
- Made in the USA
- Carb, intake, ignition sold separately
- Oil line kit required
- T143-specific exhaust required
Wire transfer required to order. Does not ship free. Call to order 231-767-5055. Excluded from additional discounts.







