Motorshop 83Inch Evolution Big Bore Cylinder Kit FXST
Add 83 cubic inches of displacement to your Harley FXST with Motorshop’s Evolution Big Bore Cylinder Kit. This bolt-on package replaces the stock cylinders with two bored and honed units, each fitted with domed Wiseco forged pistons and a 10:1 compression ratio for enhanced power and efficiency.
Key specifications and fitment:
- Two bored and honed cylinders with domed pistons
- 3.5430-inch bore designed to match the pistons
- No case boring required
- Made in the USA with high-quality materials
- Designed for Harley Davidson FXST models from 1985 to 1994
- Top end gasket must be purchased separately; recommended #15-0414 Head Base Gasket Kit
- Recommended piston kit: SKU 11-0156 (Piston Kit.045 Oversize); Piston ring set: SKU 11-0157 (83 inch Evolution Piston Ring Set.045 Oversize)
- Accessory tools available for installation: cylinder hold-down nuts tool SKU 16-0446; cylinder oil tube drain kit SKU 16-0911
- Includes installation-friendly guidance with online instructions for proper fitment
This kit is ideal for riders rebuilding or upgrading to increase engine displacement and power while maintaining reliable performance. It’s a precise, purpose-built upgrade from Motorshop designed to meet the demands of serious motorcycle enthusiasts and professional mechanics alike.
Evolution 83 inch Big Bore bolt on silver cylinder kit includes 10:1 compression Wiseco forged dome piston kit which have been honed for final fitment. No case boring required.
Upgrade your Harley Davidson FXST with the Motorshop 83 inch Evolution Big Bore Cylinder Kit, designed for models from 1985 to 1994. This comprehensive kit includes two bored and honed cylinders, each fitted with domed pistons, providing a significant increase in engine displacement and performance. The cylinders are precision-machined to fit pistons with a bore size of 3.5430 inches, ensuring optimal fit and function. For sealing, the top end gasket must be purchased separately, and it is recommended to use this kit with the #15-0414 Head Base Gasket Kit for best results. This setup is ideal for motorcycle enthusiasts seeking to enhance power output and engine efficiency while maintaining reliable performance.
The kit features high-quality components crafted in the USA, ensuring durability and precision. The included pistons are compatible with the suggested oversize piston kit (SKU 11-0156), and the piston ring set (SKU 11-0157) is recommended for optimal sealing and longevity. Accessory tools such as the cylinder hold-down nuts tool (SKU 16-0446) and the cylinder oil tube drain kit (SKU 16-0911) are also available to facilitate installation and maintenance. The entire set is designed for straightforward installation, with detailed instructions available online to ensure proper fitment and assembly. Whether rebuilding or upgrading your engine, this kit offers a reliable solution to increase your Harley Davidson's performance.
This product is an essential upgrade for Harley Davidson FXST owners looking to improve engine displacement and power. It fits multiple model years, making it a versatile choice for enthusiasts and professional mechanics alike. Proper installation and compatible gaskets are crucial for achieving the best results and engine longevity. Trust in Motorshop’s quality manufacturing and precise engineering to deliver a high-performance upgrade that meets the demands of the most passionate motorcycle riders.
Features:
- Includes two bored and honed cylinders with domed pistons for increased engine displacement
- Precision-machined to fit pistons with a 3.5430-inch bore for optimal performance
- Made in the USA with high-quality materials ensuring durability and reliability
- Suggested to be used with the #15-0414 Head Base Gasket Kit for proper sealing
- Compatible with Harley Davidson FXST models from 1985 to 1994
- Accessory Items include cylinder hold-down nuts tool and cylinder oil tube drain kit for ease of installation
- Recommended piston kit: SKU 11-0156 - Piston Kit.045 Oversize
- Recommended piston ring set: SKU 11-0157 - 83 inch Evolution Piston Ring Set.045 Oversize
Fitment:
Harley Davidson FLST 1986
Harley Davidson FLST 1987
Harley Davidson FLST 1988
Harley Davidson FLST 1989
Harley Davidson FLST 1990
Harley Davidson FLST 1991
Harley Davidson FLST 1992
Harley Davidson FLST 1993
Harley Davidson FLST 1994
Harley Davidson FLST 1995
Harley Davidson FLST 1996
Harley Davidson FLST 1997
Harley Davidson FLST 1998
Harley Davidson FLT 1984
Harley Davidson FLT 1985
Harley Davidson FLT 1986
Harley Davidson FLT 1987
Harley Davidson FLT 1988
Harley Davidson FLT 1989
Harley Davidson FLT 1990
Harley Davidson FLT 1991
Harley Davidson FLT 1992
Harley Davidson FLT 1993
Harley Davidson FLT 1994
Harley Davidson FLT 1995
Harley Davidson FLT 1996
Harley Davidson FLT 1997
Harley Davidson FLT 1998
Harley Davidson FXD 1991
Harley Davidson FXD 1992
Harley Davidson FXD 1993
Harley Davidson FXD 1994
Harley Davidson FXD 1995
Harley Davidson FXD 1996
Harley Davidson FXD 1997
Harley Davidson FXD 1998
Harley Davidson FXR 1984
Harley Davidson FXR 1985
Harley Davidson FXR 1986
Harley Davidson FXR 1987
Harley Davidson FXR 1988
Harley Davidson FXR 1989
Harley Davidson FXR 1990
Harley Davidson FXR 1991
Harley Davidson FXR 1992
Harley Davidson FXR 1993
Harley Davidson FXR 1994
Harley Davidson FXST 1985
Harley Davidson FXST 1986
Harley Davidson FXST 1987
Harley Davidson FXST 1988
Harley Davidson FXST 1989
Harley Davidson FXST 1990
Harley Davidson FXST 1991
Harley Davidson FXST 1992
Harley Davidson FXST 1993
Harley Davidson FXST 1994
Harley Davidson FXST 1995
Harley Davidson FXST 1996
Harley Davidson FXST 1997
Harley Davidson FXST 1998
