Supercharger Performance ProCharger Kit For Harley-Davidson M8 Touring Baggers | Gilby’s Street Dept.
Gilby’s patented Hard-Charger Performance Enhancement Kit with its tapered pulley shaft is engineered to eliminate the well-known intermediate shaft issues that arise when running a ProCharger on Harley-Davidson M8 Big Twin engines (2017–2023). By upgrading to this precision-built component, riders gain smoother, more reliable power delivery, improved long-term durability, and a proven solution for maximizing performance on Milwaukee-Eight Touring and Softail models.
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Supercharger Performance ProCharger Kits for 2017–2023 Harley-Davidson M8 Touring Baggers
Gilby’s Supercharger Performance ProCharger Kits for 2017–2023 Milwaukee-Eight Baggers will upgrade your Harley M8 motorcycle riding experience with the most aggressive, power-increasing performance modification available for Harley-Davidson Touring models. Designed for riders who refuse to settle for average, these supercharger systems deliver breathtaking horsepower, massive torque gains, and instant throttle response that transforms your Bagger into a highway-dominating performance machine. Available now from Gilby’s Street Dept. in Hudson, Wisconsin.
Unmatched Horsepower & Torque For Your Harley M8 Touring Bagger
If you’re riding a Harley-Davidson M8 Touring platform—such as a Street Glide, Road Glide, Road King, or Ultra Limited—you already know the Milwaukee-Eight engine responds extremely well to air delivery upgrades. But nothing compares to the raw power produced by a properly tuned Gilby supercharger system.
Professional Harley M8 Supercharger Performance Kit Installation at Gilby’s Street Dept.
Riders across the Midwest trust Gilby’s Street Dept. for performance upgrades, tuning, and supercharger installations. Our certified technicians specialize in Harley-Davidson M8 engine builds, dyno tuning, torque mapping, and custom high-output setups.
Why Choose a Gilby’s Supercharger Performance ProCharger Kit?
- Massive horsepower gains
- Instant throttle response
- Reliable long-distance performance
- Dyno-proven tuning support
Compatible Harley-Davidson M8 Touring Models:
- 2017+ Street Glide & Street Glide Special
- 2017+ Road Glide & Road Glide Special
- 2017+ Ultra Limited Models
- 2017+ Road King & Road King Special
Choose Your Supercharger Kit Pulley Option:
4-Ribbed Pulley Complete Kit – Recommended For 107-inch to 124-inch engines
6-Ribbed Pulley Complete Kit – Recommended for 124-inch and Up engines
6 Rib Outer Cover
Raw/Polished/Gloss Black
1.5” Floor Board Spacer
3 Bearings (Nachi)
6203-2NSE9C3 Intermediate Shaft
6005-2NSE9C3 Intermediate Shaft
6205C3 Compensator Bolt
Intermediate Shaft w/ Left Hand Thread
Compensator Bolt
0.100” Shim
Grade 8 ⅜-16×1 w/ Machine ⅜ Washer
Grade 8 ⅜-16×1 w/ Machine ⅜ Washer w/ Reverse Threads
⅜”x16 Bolt w/ Counter Sunk Head 1 inch
Counter Sunk Machine Washer
Crank Pulley
Raw/Gold Anodized Upper Intermediate Pulley
Raw/Gold Anodized
Upper Inside Intermediate Pulley
Raw/Gold Anodized
15lbs. Pulley
Raw/Gold Anodized
K060295 Gates Micro V-Belt
K060305 Gates Micro V-Belt
Outside Tensioner Idler Wheel 6 Rib
Inside Tensioner Idler Wheel 6 Rib
Secondary Tensioner Idler Wheel
Green Lock Tite 15002 or 49CF73
Shifter Shaft
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Contact Gilby’s Street Dept.
Gilby’s Street Dept. serves riders across Wisconsin, Minnesota, and the greater Midwest.
Gilby’s Street Dept. Address: 634 Glover Rd, Hudson, WI 54016
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