S&S Cycle 2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Gear Drive Cam - Black w/ Highlight

Name: S&S Cycle 2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Gear Drive Cam - Black w/ Highlight
Brand: S&S Cycle
SKU: S0GE 310-1227C
Price: 3083.38 USD
Availability: InStock

$3,497.95 $3,083.38 Save $414.57

SKU: S0GE 310-1227C

In Stock

Ships by Jun 17

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

The S&S Cycle 310-1227C is an Engine Performance Kit, also known as a "Power Pack" or "Big Bore Kit," designed to enhance the performance of oil-cooled Harley-Davidson Milwaukee-Eight (M8) engines from 2017 and newer. This kit includes 4.320" bore cylinders, a 4-3/8" stroke, black pushrod tubes, and a 550G cam. It is designed to increase engine displacement and horsepower, specifically transforming 107 cubic inch (ci) M8 engines to 129 ci, and 114/117 ci M8 engines to 132 ci. The kit features a black finish with highlighted fins.

Fitment

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Specifications

Brand	S&S Cycle
Part Number	S0GE 310-1227C

Videos

How to Install: S&S Cycle Winter Power Pack (Part 1) Big Bore Kit

How to Install: S&S Cycle Power Package (Part 3) Dyno Runs

S&S Cycle Product Spotlight - Power Packages for HD® Twin Cam & M8 Models

2023 ST 132” Big-Bore kit

132ci STAGE IV Harley-Davidson Road Glide (S&S Power Pack!)

S&S Big Bore Kits and Cylinder Heads for Harley Review at RevZilla.com

S&S 128 High Horsepower UPGRADE KIT By Moonshine Horsepower | Shop Talk Episode 59

S&S 132 BIG BORE KIT ISSUES!

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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.

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