PERFORMANCE PISTON KITS FOR SPORTSTER
$225.40
In Stock — Ready to Ship
Ships in 48hrs
30-Day Returns
Secure Checkout
Weight: 2.71
- Spawned from this successful manufacturer’s line of automotive pistons
- Lightweight, permanent mold cast pistons
- Manufactured from Hypereutectic 390 Alloy, contain 16-18% silicon and heat treated to T6 specifications producing a stronger than stock piston
- Special alloy composition keeps heat confined to the combustion chamber and reduces heat transfer to the piston itself production a cooler running piston
- Piston expansion is reduced by as much as 20% over conventional pistons
- Less piston rock, better ring support, more durability, and better retained compression for maximum power
- The key feature to these pistons is the accumulator groove between the tip and second ring which averages the normal pressure between the first and second ring, keeping the pressure low enough to prevent lifting of the top ring while maintaining preload on the second (oil scraping) ring
- Each set of pistons includes wrist pins, spiral locks, engine assembly lube, and Hastings moly rings
- Order 65199 for replacement wrist pin lock (sold each)
- Wrist pins measure .792″ O.D.
- Replacement rings are available
KB Performance Pistons
Fits Evolution Sportster 1988/2003 1200cc (74ci)
Standard bore =3.498″
9:1 compression ratio Flat Top Piston
+.030″ Bore
By: KB PERFORMANCE PISTONS
Specifications coming soon.
Shipping Information
In-stock orders ship within 1–2 business days. Shipping time varies by location and carrier. Standard domestic shipping is available for most items. Expedited options may be available at checkout.
- Free Standard Shipping on orders over $99
- Most orders ship within 48 business hours
- Tracking number provided upon shipment
- Oversized items may require freight shipping
Return Policy
We accept returns on eligible new items within 30 days of delivery. Used parts are sold as-is and may not be eligible for return. Items must be in original, uninstalled condition with all original packaging.
Is this part compatible with my bike?
Fitment information is listed in the product details above. If you have questions about compatibility for your specific model and year, please contact our team before ordering.
Do you offer a warranty on parts?
New parts carry the manufacturer warranty where applicable. Used parts are sold as-is and are typically tested or described in detail. See the product condition notes for specifics.
How do I track my order?
Once your order ships, you will receive an email with a tracking number. You can also log into your account at any time to view order status.
Can I return a used part?
Used parts are generally sold as-is and are not eligible for return unless there was a significant misdescription. Contact us within 7 days of delivery if you have a concern.
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