top of page

INJECTING HORSEPOWER INTO THE V-TWIN INDUSTRY SINCE 2002

HOME
ABOUT
SERVICES
PRODUCTS
SHOP BY MODEL
DEALERS
- LOCATE A DEALER
- BECOME A DEALER
FORMS
TECH
CONTACT
MERCH
More

Use tab to navigate through the menu items.

We proudly Support

M8® Camshaft JLR-121

JLR-121 Camshaft | Bolt in style for M8 Gen II engines

M8® Camshaft JLR-121

SKU: JLR-121

$330.00Price

Excluding Sales Tax

Part Number*

Quantity*

RELATED PRODUCTS

BF17 TEE

Excluding Sales Tax

High Flow Injector Kit (5.5gps)

Excluding Sales Tax

M8® BAGGER MID LENGTH 2017+

Excluding Sales Tax

HAND CRAFTED POCKET TEE TALL

Excluding Sales Tax

DEALER M8 CAST THROTTLE BODY 2017-2023

Excluding Sales Tax

DEALER M8 BILLET THROTTLE BODY 2017-2023

Excluding Sales Tax

2026 HPi CALENDAR

Excluding Sales Tax

M8® Camshaft JLR-121

Excluding Sales Tax

M8® Camshaft JLR-609

Excluding Sales Tax

V2 LEAF COVER ONLY

V2 LEAF COVER ONLY

Excluding Sales Tax

V2 SPEED DEMON COVER ONLY

V2 SPEED DEMON COVER ONLY

Excluding Sales Tax

M8® Gen II CAST Throttle Body

Excluding Sales Tax

V2 Big Twin/Twin Cam

V2 Big Twin/Twin Cam

Excluding Sales Tax

USA Camo Richardson Hat

Excluding Sales Tax

KEEP UP HOODIE

Excluding Sales Tax

FEEL THE POWER HOOIDE

Excluding Sales Tax

© 2025-2026 Horsepower Inc. and HPi Logos and Trademarks All Rights Reserved.
Harley-Davidson® is a registered trademark and is used for reference only.

Legal Disclaimer

Terms & Conditions

bottom of page