S&S Cycle
S&S Cycle 84-99 BT 3-1/2in .010in Bore Forged Stroker Piston Kit
SKU: S0GE 106-5555
Description
Part #: 106-5555
These forged 3-1/2" bore stroker pistons for 1984-'99 HD (R) Evolution (R) big twin engines are required for the S&S 89" stock bore stroker kits, which include S&S 4-5/8" stroke flywheels. Pistons are designed to be used with stock cylinder heads or with S&S Performance Replacement heads. Low silicon forged material and advanced S&S piston skirt design result in high strengh and low noise. 3-1/2" +.010" bore.
+.010" 3-1/2'', 9.25:1, 89" Kit
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | S&S Cycle |
| Part Number | S0GE 106-5555 |
Videos
S&S Cycle Installation - The S&S HI-4N Ignition
S&S Cycle Product Spotlight - Power Packages for HD® Twin Cam & M8 Models
S&S Cycle - Product Overview - Tappets
S&S Cycle - Installing The S&S TC3 Oil Pump and Cam Plate
S&S Cycle Flywheel Assembly Overview
How to Install: S&S Cycle Power Package (Part 2) Cam Chest Kit
How to Install: S&S Cycle Winter Power Pack (Part 1) Big Bore Kit
S&S Cycle - Introducing the S&S Short Block - Part 1
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy