In stock
KB Performance Piston Kit — 4.125" +0.020" — 11.0:1 CR — 114"/117" Bored to 120" — M8
- New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder
- Hard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove
- Teflon based skirt coating eliminates piston rock for the best possible ring seal with no piston slap noise
- Hard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels
- Flat Top 1.2 cc design with oversized valve pockets to accept 1.00 mm larger valves
$427.95
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 & features7 features
- New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder
- Hard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove
- Teflon based skirt coating eliminates piston rock for the best possible ring seal with no piston slap noise
- Hard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels
- Flat Top 1.2 cc design with oversized valve pockets to accept 1.00 mm larger valves
- Includes pistons, rings, pins and clips
- Made in the USA
Specifications14 specs
- Piston Material
- 4032 Aluminum Alloy
- Displacement
- 120"
- Piston Head Shape
- Flat Top
- Compression Ratio
- 11.0:1
- Style
- Forged
- Units
- Kit
- Bore - Oversize
- +0.020"
- Riding Style
- Street
- Bore Size
- 4.125"
- Model
- Super Duty
- Stroke Length
- 4.500"
- Shipping weight
- 2.91 lb
- Package size
- 5.5 × 5.5 × 5.5 in
- Country of origin
- Mexico
Fitment28 models · Harley-Davidson
Harley-Davidson28 models
- Electra Glide Police FLHTPI2017–2024
- FLFBS Fat Boy 1142018–2024
- FLH Electra Glide Revival2021
- FLHCS Heritage Classic 1142018–2024
- FLHR Road King2017–2022
- FLHRXS Road King Special2017–2024
- FLHT Electra Glide Standard2019–2022
- FLHTCU Electra Glide Ultra Classic2017–2019
- FLHTCUTG Tri Glide Ultra2017–2024
- FLHTCUTG Tri Glide Ultra G.I.2022
- FLHTK Ultra Limited2017–2021
- FLHTKL Ultra Limited Low2017–2019
- FLHX Street Glide2017–2024
- FLHXS Street Glide Special2017–2023
- FLRT Freewheeler2017–2021
- FLTRK Road Glide Limited2020–2021
- FLTRU Road Glide Ultra2017–2019
- FLTRX Road Glide2017–2021
- FLTRXS Road Glide Special2017–2021
- FXBBS Street Bob 1142021–2024
- FXBR Breakout 1172023–2024
- FXBRS Breakout 1142018–2020
- FXDRS FXDR 1142019–2020
- FXFBS Fat Bob 1142018–2021
- FXLRS Low Rider S 1142020–2021
- FXLRS Low Rider S 1172022–2024
- FXLRST Low Rider ST 1172022–2024
- Road King Police FLHP2017–2021
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 #
- 0910-5726
- KB Performance part #
- KB542LCA.020
- UPC
- 800745256713
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 #KB542LCA.020.