S&S CYCLE SKU: T14-1020318

S&S Cycle 4.32" Big-Bore Power Pack - Harley Twin Cam

$3,294.95
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About S&S Cycle

S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.

Experience a dramatic boost in horsepower and torque with the S&S Cycle 4.32" Big-Bore Power Pack. This comprehensive kit combines big-bore cylinders, a high-performance cam, cam plate, and oil pump into a single, bolt-together package for your Harley Twin Cam. It's designed to deliver substantial power gains without the need for custom machine work or complex tuning.

Why riders pick this

  • 4.32-inch big-bore cylinders for increased displacement
  • High-performance cam and cam plate included
  • Complete oil pump for enhanced reliability
  • All gaskets and seals provided for installation
  • Bolt-together design, no custom machine work required
  • Delivers significant horsepower and torque gains

The S&S Cycle 4.32" Big-Bore Power Pack is the ultimate all-in-one solution for riders looking to significantly upgrade their Harley Twin Cam engine. This complete kit brings together precisely matched components, including 4.32-inch big-bore cylinders, a high-performance camshaft, a robust cam plate, and an efficient oil pump. Designed for a bolt-together installation, this Power Pack eliminates the need for costly and time-consuming custom machine work on your stock Harley cases, making a substantial power increase more accessible than ever before.

Complete Bolt-Together Performance

  • Includes 4.32-inch big-bore cylinders and pistons
  • Matched high-performance cam and cam plate
  • Complete oil pump for optimized lubrication
  • All necessary gaskets and seals supplied for installation
  • Designed for bolt-together installation, no machine work needed
  • Adds significant horsepower and torque to your V-twin

Simplified Power Upgrade for Your V-Twin

With the S&S Cycle Power Pack, upgrading your Harley Twin Cam's engine is streamlined and effective. Every component in this kit is chosen and engineered by S&S Cycle to work in harmony, ensuring reliable performance and maximum power output. The inclusion of all gaskets and seals means you have everything at hand for a complete installation. This Power Pack is an ideal choice for riders who want a profound increase in their bike's performance with a proven, integrated system.

Specifications

  • Brand: S&S Cycle
  • Manufacturer Part #: 310-1233D
  • Category: Engine Components / Piston Sets - Powersports
  • Weight: 44.19 lb

Common questions

What's included in the Power Pack?

The S&S Cycle Power Pack is a comprehensive kit that includes big-bore cylinders, pistons, a high-performance cam, cam plate, oil pump, all necessary gaskets, seals, and hardware to complete the assembly.

Do I need to have my engine machined for this kit?

No, this S&S Cycle Power Pack is specifically designed for a bolt-together installation, meaning it does not require custom machine work on standard Harley Twin Cam cases.

Will I need a tuner after installing this Power Pack?

Yes, a fuel/air recalibration or professional dyno tune is strongly recommended after installing the S&S Cycle Power Pack to optimize performance, ensure correct air-fuel ratios, and maximize engine reliability.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDS&S Cycle
TYPEPiston Sets - Powersports
SKUT14-1020318
WEIGHT44.19 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
5
4 RATINGS
5★ 4
4★ 0
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Aug 28, 2023

Everything you expect from S&S

Have installed this kit on multiple bikes. S&S knows what they’re doing.

— BRETT M
✓ VERIFIED
Apr 13, 2022

100 kit is sick! 10/5/1 compression is perfect for the 585 cams. Not going to burn the tires unless you bounce it, but at 2.7 K it pulls like a freight train. Super fun! Thanks S&S!

— Anonymous
✓ VERIFIED
Mar 8, 2020

5 Stars

— Anonymous
✓ VERIFIED
Jun 6, 2021

I didn't get it yet,can't wait too get it in my bike, than ill leave a review

— Anonymous