S&S CYCLE - 320-0355 - Flywheel Assembly - 4-3/8” - w/o Sprocket Bearing Race - Twin Cam ”B” '99-'06
The S&S CYCLE 320-0355 sprocket is built to be the strong link in your drivetrain, with precise tooth form, quality material, and correct dimensional spec. S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671” crankpin, which is what keeps a chain running quietly and without accelerated wear. Fits directly in stock crankcases with no modifications. Pairing a fresh chain with fresh sprockets is always the right call: a new chain on worn sprockets adapts to worn tooth geometry immediately, shortening both. The 320-0355 gives you a sprocket worth pairing with a quality chain. Sold individually.
Features
- S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671” crankpin
- Fits directly in stock crankcases with no modifications
- Made in the U.S.A.
- Flywheel assembly without sprocket bearing race are designed for use with Timken bearing conversion (sold separately).
Specs
- Engine Type: ”B” motor
- Stroke Length: 4-3/8”
- Features: without Sprocket Bearing Race
- Riding Style: Street
- Units: Each
- Product Name: Flywheel Assembly
- Material: 4140 Steel
Frequently Asked Questions - S&S CYCLE - 320-0355 - Flywheel Assembly - 4-3/8” - w/o Sprocket Bearing Race - Twin Cam ”B” '99-'06
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.
