Upgrade Kits for Harley Davidson Motorcycle Engines

Call 800-841-STAR or E-mail for more information.

Our Thrasher Series, engine upgrade packages are the most powerful and reliable available.

Milwaukee-8 THRASHER KITS  

FOR THE NEW 2017-2020 HARLEY® MILWAUKEE 8

Just Released!

The New Thrasher 1

2017-2020 Milwaukee 8

$2895 Turn-Key

Kit Includes:

  •  Star 30/30 Cam

  • 31T Front Pulley

  • Pushrods

  • Gaskets 

  • Dyno Tuning

  • TTS Tuner (required for tuning at Star)

 

 

 

 

 

 

 

 

M-8 THRASHER 2 

Engine Size:

121 Kit - 2017-2018 - 107" to a 121" -----Makes 140 hp x 135 tq   

 $7,395 Turn Key 

124 Kit - 2017-2020 CVO - 114"/117" to a 124" -----Makes 145 hp x 140 tq   

 $6,995 Turn Key 

Kit Includes:

  • S/E Cylinders, bored & honed to 4.185" (107 models)

  • Stock Cylinders bore & honed to 4.185" (114-117 models)

  • Star Headwork

  • Custom Star Forged Pistons

  • High End Ring Set

  • Valves 2mm oversize

  • Racing Valve Springs

  • 3/4 Star Cam

  • HPI 62 mm Billet Throttle Body

  • Manifold Modifications

  • 5.5 Injectors

  • Lock-up Clutch

  • Adjustable Pushrods

  • Assembled and Dyno Tuned

  • FireCore Plug Wires

Options for Maximum Power

  • 2020 Oil Pump------$220

  • D&D Billet Cat-$1,000(chrome) $1,150 (Blk)

  • D&D Ghost Pipe--$350(chorme)$450 (Blk)

  • End caps for pipe $149 each

  • Choice of Bigger Air Cleaner

Options Required for Maximum Power:

  • D&D Billet Cat Pipe --$1,000 (Chrome) $1,150 (Blk)

  • D&D Ghost Pipe----$350 (Chrome) $450 (Blk)

  • End Caps for Pipes---$149 each

  • TTS Tuner-------- $440

  • Air Cleaner------- $399

  • Oil Pump ----$225

Thrasher 2
124 Kit
3/4 Star Custom Cam
D&D Billet Cat Exhaust

Star Custom Pistons

Email info@starracing.com for more info and details.

Turn around time is typically 4 weeks for our Thrasher kits depending on shop workload, so you will be back on the road in no time!

M-8 THRASHER 3 

Engine Size:

126 Kit- 2017-2020  107"to a 126"------Makes 155 hp x 145 tq      

130 Kit  2017-2020 CVO 114"/117' to a 130" ----Makes 160 hp x 150 tq   

$8,995 Turn Key

Use your crank & Cylinders

Kit Includes:

  • Cylinders Resleeved, bored & honed to 4.280

  • Sleeves

  • Custom Pistons w/rings

  • Heads Ported

  • Bigger Valves

  • Valve Springs

  • Billet Throttle Body HPI Kit

  • 3/4 Star Cam

  • 8.2 Injectors

  • Pushrods

  • Lock Up Clutch

  • FireCore Plug Wires

  • Assembled, DYNO Tuned & Ready To Go!

 

Options Required for

Maximum Power:

  • D&D Billet Cat Pipe --$1,000(chrome) $1,150 (Blk)

  • D&D Ghost Pipe----$350 (Chrome) $450 (Blk)

  • End Caps for Pipes---$149 each

  • TTS Tuner-------- $440

  • Air Cleaner------- $399

  • Oil Pump --------$225

Email info@starracing.com for more info and details.

Turn around time is typically 4 weeks for our Thrasher kits depending on shop workload, so you will be back on the road in no time!

M-8 THRASHER 4 

133 Kit - 2017-2020 107" to a 133"......Makes 170 hp x  155 tq 

137 Kit - 2017-2020 CVO 114"/117" to a 137"......Makes 175 hp x 158 tq

$12,995 Turn Key

Kit Includes:

  • Crank Blue Printing

  • Cases Bored

  • Star Custom Pistons

  • Sleeves

  • Cylinders -Resleeved,  Bore & Honed to 4.400

  • Star Headwork

  • 3mm SS Oversized Int & Ex Valves

  • Heavy Duty Springs & Ti Retainers

  • Full Race Star Cam

  • HPI Throttle Body Kit

  • Matched Injectors

  • Lock up Clutch

  • Adjustable Pushrods

  • Bottom End Work

  • Bearing, Seals, Gaskets

  • Fluids, Plugs, Headbolts

  • 2 Stage Oil Pump

  • FireCore Plug Wires

  • Assembled

  • Dyno Tuned

  • Before & After Dyno 

Options Required for

Maximum Power

  • ​D&D Billet Cat Exhaust $1,000 (Chrome)  $1,150 (Blk)

  • D&D Ghost Pipe $350 (Chrome) $450 (Blk)

  • End Caps For Exhaust $149 each

  • TTS Tuner $440

  • Bigger Air Cleaner $399

WARRANTY - Star Power makes no warranty, expressed or implied, as to the products sold, manufactured, or imported by us, including without limitation any warranties or merchantability and fitness for a particular purpose. These parts are designed for racing only; use them at your own risk.

YOUR COMPLETE SATISFACTION IS OUR GOAL – Most performance parts are designed for off highway use only and may not be legal for use on public streets, roads, or highways. Performance parts are inherently short lived and must be inspected regularly to prevent untimely failure and/or damage. Any new or modified parts, or any services provided by Star Power (or which are sold through Star Power) are sold as performance parts and are sold as is with no warranty, unless specified by the individual manufacturer.  

CALL US

Toll Free: 1-800-841-7827

Phone: 229-924-0031

EMAIL US

Located in Americus, GA

OPENING HOURS

Monday - Thursday: 9:00 a.m. to 5:00 p.m.

Friday: 9:00 a.m. to 12:00 p.m.

*Times are listed in Eastern Standard Time*

Copyright © 2007-2020 Bryce & Bryce Enterprises, Inc. Harley High Performance Motorcycle Parts & Services