REVOLUTION PERFORMANCE, LLC - RP201-204W - Cylinder Kit - 85” - Big Bore - Black with Highlighted Fins - Evolution Big Twin
The REVOLUTION PERFORMANCE, LLC RP201-204W is a cylinder kit - 85” - big bore - black with highlighted fins - evolution big twin engineered for street applications where fit, function, and build quality are the baseline expectation. Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan. True bolt-on kit that delivers major power with no machine work required, giving you a level of quality that holds up across the full service life of the component. Includes custom forged pistons with high tension rings specifically designed for NSC cylinders and head/base gasket set. Replacement head and base gasket sets available separately.. For replacement pistons and rings, see Revolution Performance Big Bore Piston Kits.. For riders who know the difference quality components make, the RP201-204W is the right call. Sold as a complete kit.
Features
- Revolution™ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan
- True bolt-on kit that delivers major power with no machine work required
- Includes custom forged pistons with high tension rings specifically designed for NSC cylinders and head/base gasket set
- Made in the USA
- Replacement head and base gasket sets available separately.
- For replacement pistons and rings, see Revolution Performance Big Bore Piston Kits.
- Upgraded cylinder studs and head bolts recommended.
Specs
- Units: Kit
- Bore Size: 3-9/16”
- Features: Domed
- Color/Finish: Black
- Compression Ratio: 10.3:1
- Cylinder Bore Coating: Nickel-Silicon Carbide
- Riding Style: Street
- Stroke Length: 4-1/4”
- Style: Bolt-On
- Color/Finish: Highlighted Fins
- Product Name: Cylinder Kit
- Type: Big Bore
- Material: Aluminum
- Displacement: 85”
Frequently Asked Questions - REVOLUTION PERFORMANCE, LLC - RP201-204W - Cylinder Kit - 85” - Big Bore - Black with Highlighted Fins - Evolution Big Twin
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.
