In stock
JE Pistons Piston Kit — 4.125" Bore — 4.375" Stroke — 11.5:1 CR — 107" M8
- 2618-T6 forged construction provides better aligned grain flow and higher tensile strength to provide durability, even in high-performance builds
- Skirt coating reduces operating friction and wear
- Offset pins reduce piston rock and minimize operating noise
- Skirt notches for optimal clearance at bottom dead center
- Accumulator groove taps combustion gases below the top ring to promote more consistent, positive ring seal and performance
$498.99
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 JE Pistons →
Description & features7 features
- 2618-T6 forged construction provides better aligned grain flow and higher tensile strength to provide durability, even in high-performance builds
- Skirt coating reduces operating friction and wear
- Offset pins reduce piston rock and minimize operating noise
- Skirt notches for optimal clearance at bottom dead center
- Accumulator groove taps combustion gases below the top ring to promote more consistent, positive ring seal and performance
- Inlcudes two pistons, premium ring packs, wrist pins and wire locks
- Made in the USA
Specifications10 specs
- Riding Style
- Street
- Stroke Length
- 4.375"
- Bore Size
- 4.125"
- Units
- Kit
- Compression Ratio
- 11.5:1
- Piston Material
- Forged 2618 Aluminum
- Displacement
- 107"
- Shipping weight
- 3.26 lb
- Package size
- 10.7 × 5.9 × 5.5 in
- Country of origin
- USA
Fitment20 models · Harley-Davidson
Harley-Davidson20 models
- FLDE Deluxe 1072018–2020
- FLFB Fat Boy 1072018–2020
- FLHC Heritage Classic 1072018–2021
- FLHR Road King2017–2022
- FLHT Electra Glide Standard2019–2022
- FLHTCU Electra Glide Ultra Classic2017–2019
- FLHTCUTG Tri Glide Ultra2017–2018
- FLHTK Ultra Limited2017–2020
- FLHTKL Ultra Limited Low2017–2019
- FLHX Street Glide2017–2023
- FLRT Freewheeler2017–2018
- FLSB Sport Glide 1072018–2024
- FLSL Softail Slim 1072018–2021
- FLTRU Road Glide Ultra2017–2019
- FLTRX Road Glide2017–2023
- FXBB Street Bob 1072018–2020
- FXBR Breakout 1072018–2019
- FXFB Fat Bob 1072018–2020
- FXLR Low Rider 1072018–2020
- FXST Softail Standard 1072020–2024
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 #
- 0910-6991
- JE Pistons part #
- 398729
- UPC
- 193564567376
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 JE Pistons?
- Yes. It’s new and genuine, straight from Salto — JE Pistons part #398729.