In stock
KB Performance Piston Kit — 4.250" +0.005" — 11.8:1 CR — 124" Big Bore — 107" 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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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
- +0,005", +0.005"
- Displacement
- 124"
- Piston Material
- 4032 Aluminum Alloy
- Bore Size
- 4.250"
- Model
- Super Duty
- Compression Ratio
- 11.8:1
- Piston Head Shape
- Domed
- Stroke Length
- 4.375"
- Style
- Forged
- Riding Style
- Street
- Type
- Big Bore
- Units
- Kit
- Shipping weight
- 3.2 lb
- Package size
- 6 × 5.8 × 5.8 in
- Country of origin
- Mexico
Fitment11 models · Harley-Davidson
Harley-Davidson11 models
- FLFB Fat Boy 1072018–2020
- FLHC Heritage Classic 1072018–2021
- FLHR Road King2017–2022
- FLHT Electra Glide Standard2019–2022
- FLHTCUTG Tri Glide Ultra2017–2024
- FLHX Street Glide2017–2024
- FLSB Sport Glide 1072018–2024
- FLSL Softail Slim 1072018–2021
- FXBB Street Bob 1072018–2020
- FXBR Breakout 1072018–2019
- FXLR Low Rider 1072018–2020
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 #
- 0910-6404
- KB Performance part #
- KB595LCA.005
- UPC
- 800745276162
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 #KB595LCA.005.