REVOLUTION PERFORMANCE, LLC - RP201-216W - Monster Big Bore Kit - '84-'99 Harley-Davidson FXRS-Conv Low Rider Sport Convertible
The REVOLUTION PERFORMANCE, LLC Monster Big Bore Kit features no sleeving allows for larger bore sizes, Made in the USA, and Upgraded cylinder studs and head bolts recommended.
Features
- Aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores
- No sleeving allows for larger bore sizes
- NSC-plated cylinders have less frisction for increased horsepower, lower engine temperatures and longer lifespan
- Includes pair of all-aluminum NSC-coated bore cylinders, custom forged pistons with high-tension rings specifically designed for NSC cylinders, wrist pins, circlips and a head/base gasket set
- Made in the USA
- Will require case boring, which is not recommended on OEM cases '95-earlier; some may require a 4-5/8" stroke crank.
- Upgraded cylinder studs and head bolts recommended.
- Replacement gasket sets and piston kits available separately.
Specs
- Color/Finish: Highlighted Fins
- Units: Kit
- Bore Size: 3-7/8"
- Displacement: 109"
- Model: Monster
- Compression Ratio: 10.0:1
- Type: Big Bore
- Color/Finish: Black
- Stroke Length: 4-5/8"
- Material: Aluminum
- Product Name: Cylinder Kit
- Cylinder Bore Coating: Nickel-Silicon Carbide
- Riding Style: Street
Frequently Asked Questions - REVOLUTION PERFORMANCE, LLC - RP201-216W - Monster Big Bore Kit - '84-'99 Harley-Davidson FXRS-Conv Low Rider Sport Convertible
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.
