Building Power Since 1976

DYNO RESULTS

21 FXBRS 128ci Tomahawk Kit

Proven Performance. Real Results.

On the Dyno

Select the chart to view it full size.

HORSEPOWER

151

TORQUE · LB-FT

148

The Bike & Setup

Year

2021

Make

Harley-Davidson

Model

FXBRS (Breakout)

Engine Family

Milwaukee-Eight (M8)

Engine Size

128ci

Cam / Parts Installed

Tomahawk Kit

Behind the Numbers

Build Details & Test Notes

Tested by Alpha Performance Engines
Build: 2021 FXBRS 128ci Tomahawk Kit
Peak Horsepower: 151.20 HP @ 5,980 RPM
Peak Torque: 147.56 ft-lbs @ 4,760 RPM
Tested on Dynojet Model 250i
Test Date: Thursday, June 30, 2022 – 8:13:50 AM
Correction Factor: SAE
Smoothing: 5
AFR Source: Dynoware RT WB

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Let’s build the right combination for your ride.