In stock
KB Performance Piston Kit — 4.250" Standard — 11.7:1 CR — 128" Big Bore — 114"/117" M8
- Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves
- Type 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels
- Type 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on
- OE-style round wire locks are easily installed
- Heavy-duty wrist pins with true 0.9270” diameter to fit rods correctly
$446.95
In stock. Ships in 2–4 business days · free shipping over $150.
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Questions? Call the shop: 801-361-3010
Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014
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Everything we carry from KB Performance →
Description & features8 features
- Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves
- Type 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels
- Type 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on
- OE-style round wire locks are easily installed
- Heavy-duty wrist pins with true 0.9270” diameter to fit rods correctly
- Line2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation
- Kit includes pistons, rings, pins and locks
- Requires 4.250" bore cylinder sold separately.
Specifications15 specs
- Bore - Oversize
- Standard
- Style
- Forged
- Piston Head Shape
- Domed
- Type
- Big Bore
- Compression Ratio
- 11.7:1
- Piston Material
- 4032 Aluminum Alloy
- Riding Style
- Street
- Stroke Length
- 4.500"
- Displacement
- 128"
- Bore Size
- 4.250"
- Units
- Kit
- Model
- Super Duty
- Shipping weight
- 3.15 lb
- Package size
- 6.3 × 5.5 × 5.5 in
- Country of origin
- Mexico
Fitment13 models · Harley-Davidson
Harley-Davidson13 models
- FLFBS Fat Boy 1142018–2024
- FLHCS Heritage Classic 1142018–2024
- FLHRXS Road King Special2017–2024
- FLHTCU Electra Glide Ultra Classic2017–2019
- FLHTKSE CVO Limited2017–2021
- FLHXS Street Glide Special2017–2023
- FLHXSE CVO Street Glide2017–2024
- FLTRX Road Glide2017–2024
- FLTRXS Road Glide Special2017–2023
- FLTRXSE CVO Road Glide2018–2024
- FXBRS Breakout 1142018–2020
- FXDRS FXDR 1142019–2020
- FXFBS Fat Bob 1142018–2023
Fitment comes from the catalog data for this part. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.
Part numbers
- Salto part #
- 0910-6405
- KB Performance part #
- KB596LCA.STD
- UPC
- 800745276186
Shipping
In stock. Ships in 2–4 business days by ground.
Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.
Questions4 answers
- Is it in stock?
- Yes — it’s in stock right now. We check again the moment you order, before anything is charged.
- How fast will it get to me?
- Usually 2–4 business days by ground.
- Will it fit my machine?
- It’s listed for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
- Is this genuine KB Performance?
- Yes. It’s new and genuine, straight from Salto — KB Performance part #KB596LCA.STD.