Creating More Horsepower Daily

Milwaukee Eight and Twin Cam performance specialists in Evansville, Indiana. Purposeful builds, precision dyno tuning, and real numbers for the street.

Built for Real-World Power

Focused Harley performance, verified on the dyno.

Sheffer Performance is built around one goal: making Harley-Davidson motorcycles perform. Every build starts with a plan and ends on the dyno, where the horsepower and torque numbers prove it.

Performance Services Built Around Your Bike

Dyno Tuning & EFI Calibration

Precision fuel and timing calibration for stock and modified motorcycles, with final horsepower and torque documented on a printed dyno sheet.

Big Bore & Stage Packages

Proven cam, head, exhaust, and big-bore combinations matched to your motorcycle, riding style, and performance goals.

Precision Where It Matters

Dyno Tuning

Fuel and timing calibrated for power, response, and drivability.

Big Bore Packages

Complete combinations built for strong, usable horsepower.

Cam Upgrades

CR-series cam options matched to how and where you ride.

Cylinder Heads

Stock and prepared head combinations for the intended result.

Exhaust & Intake

Airflow upgrades selected to support the complete build.

Why Riders Choose Sheffer Performance

Harley-Davidson Specialists

Focused experience with Milwaukee Eight and Twin Cam platforms.

Verified on the Dyno

Every completed combination is measured, calibrated, and proven.

Dedicated Appointment Time

Appointment-only scheduling gives your motorcycle dedicated shop time.

Straight Answers

Clear recommendations based on the upgrades that will actually move the needle.

From Consultation to Proven Results

1. Consultation

Discuss your bike, goals, riding style, and budget.

2. Build Plan

Choose the combination that fits the result you want.

3. Installation

Parts are installed and set up during dedicated shop time.

4. Dyno Results

Final calibration and documented horsepower and torque.

Every build is scoped around the rider, the motorcycle, and the intended result.

The Numbers Don't Lie

141 HP / 150 TQ

128-inch Super Sport - 2018 Heritage Softail.

Nearly 140 HP

128-inch Tractor Package with JWR Plus One heads.

140 HP / 140 TQ

2017 CVO Ultra with stock heads and CR-485 cam.

Milwaukee Eight

Specialized packages for late-model Harley platforms.

Twin Cam

Proven performance upgrades for Twin Cam motorcycles.

6.9K Followers

An active Facebook community built around real shop work.

Ready to Wake Up Your Harley?

Call 812-401-TUNE (8863) or request an appointment online.