KB Performance Piston Kit
KB Performance
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SKU: 90-90506
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Product Details
Features
- Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy
- Allow a tighter fit and longer piston and ring life
- Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Replacement piston rings and pin lock rings available separately
- KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.
- Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
Specifications
| UPC | 800745061447 |
|---|---|
| Vendor Part Number | KB2660203 |
| Package Height | 4.72 |
| Package Length | 9.64 |
| Package Width | 4.76 |
| Parts Unlimited # | DS-751250 |
| Bore Oversize - Imperial | +0.020" |
| Bore Size Imperial | 3.498" |
| Brand | KB Performance |
| Compression Ratio | 10.5:1 |
| Piston Material | Hypereutectic Alloy |
| Riding Style | Street |
| Unit of Measure | Kit |
Fitment
| YEAR | MAKE | MODEL |
|---|---|---|
| 1993 - 1998 | Harley-Davidson | FXDL Dyna Low Rider |
| 1993 - 1998 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 1984 - 1994 | Harley-Davidson | FXR Super Glide II |
| 1999 | Harley-Davidson | FXR2 |
| 1999 | Harley-Davidson | FXR3 |
| 1985 - 1987 | Harley-Davidson | FXRC Low Rider Chrome |
| 1986 | Harley-Davidson | FXRD Sport Glide Grand Touring |
| 1984 | Harley-Davidson | FXRDG Disc Glide |
| 1984 - 1992 | Harley-Davidson | FXRP |
| 1985 - 1995 | Harley-Davidson | FXRPF Police |
| 1984 - 1992 | Harley-Davidson | FXRS Low Glide |
| 1990 - 1994 | Harley-Davidson | FXRS-Conv Low Rider Sport Convertible |
| 1986 - 1993 | Harley-Davidson | FXRS-SP Low Rider Sport |
| 1984 - 1992 | Harley-Davidson | FXRT Sport Glide |
| 1984 - 1999 | Harley-Davidson | FXST Softail Standard |
| 1999 | Harley-Davidson | FXSTB Night Train |
| 1986 - 1999 | Harley-Davidson | FXSTC Softail Custom |
| 1988 - 1999 | Harley-Davidson | FXSTS Springer Softail |
| 1995 - 1997 | Harley-Davidson | FXSTSB Bad Boy |
| 1989 - 1993 | Harley-Davidson | Low Rider FXRS |
| 1993 | Harley-Davidson | Sport Glide FXRT |
Fitment Disclosure
For reference only, please consult your owner’s manual to confirm your fitment.
General Safety Warning
Failure to follow the manufacturer's recommendations and requirements can cause product failure resulting in serious injury or death. While effort has been taken to collect accurate fitment information, 43 Moto accepts no liability for loss or damage resulting from errors or omissions. If you believe any of the information provided is erroneous, please email [email protected].
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