S&S CYCLE - 310-0901A - T143 Long Block Engine - Black Edition - Dyna
For riders who demand quality in every component, the S&S CYCLE 310-0901A is an engine built to the standards that experienced powersports enthusiasts recognize the moment they put it in their hands. S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges. S&S 635 easy-start gear drive cams and 1.725:1 rocker arms for .674” total lift, giving you a level of quality that holds up across the full service life of the component. S&S Super Stock™ T2 crankcases with reed breather valve three-piece flywheels. S&S high-flow oil pump and cam cover. S&S premium high-performance tappets. Whatever the application demands, the 310-0901A gives you a component built to meet it. Sold individually.
Features
- S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges
- S&S 635 easy-start gear drive cams and 1.725:1 rocker arms for .674” total lift
- S&S Super Stock™ T2 crankcases with reed breather valve three-piece flywheels
- S&S high-flow oil pump and cam cover
- S&S premium high-performance tappets
- Made in the USA
- T143-specific or custom exhaust required.
- Fits in stock chassis, no cutting or frame modifications necessary.
- Does not include carb/intake or ignition system. Must be purchased separately.
- Revised oil routing on '99-'06 Touring models make it so an oil line installation kit is no longer required.
Specs
- Riding Style: Street
- Units: Each
- Compression Ratio: 10.5:1
- Product Name: Engine
- Bore Size: 4.425”
- Color/Finish: Black
- Stroke Length: 4.625”
- Type: Long Block
- Displacement: 143”
- Model: T-Series
Frequently Asked Questions - S&S CYCLE - 310-0901A - T143 Long Block Engine - Black Edition - Dyna
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
