Skip to content

Facebook
Instagram
X (Twitter)

Trusted Performance Provider for Nearly 40 Years!

ENGINE
- TUNING / ELECTRONICS
  
  ENGINE TUNING
  THROTTLE TUNING
- INTAKES
- EXHAUST
- FORCED INDUCTION
- PULLEYS & BELTS
- COOLERS
- RADIATORS
- ENGINE COMPONENTS
TRANSMISSION
SUSPENSION
BRAKES
- BRAKE PADS
- BRAKE ROTORS
EXTERIOR
INTERIOR
CONTACT US

X (Twitter)
Facebook
Instagram

Search

ENGINE
- TUNING / ELECTRONICS
  
  ENGINE TUNING
  THROTTLE TUNING
- INTAKES
- EXHAUST
- FORCED INDUCTION
- PULLEYS & BELTS
- COOLERS
- RADIATORS
- ENGINE COMPONENTS
TRANSMISSION
SUSPENSION
BRAKES
- BRAKE PADS
- BRAKE ROTORS
EXTERIOR
INTERIOR
CONTACT US

Search

SELECT YOUR VEHICLE

1

2

3

Sort by:

20 products

Filter

Filter

PRODUCT TYPE

Search

ELECTRONICS
INTAKE
EXHAUST

BRAND

Search

Rough Country

Collection

Performance

clear

Filter and sort Filter

Filter and sort

Filter

20 products

Sort by:

Remove all

20 products

Speedometer Calibrator | Inline | Chevrolet Silverado/GMC Sierra 2500HD/3500HD | 2017-2018 | Rough Country | 90005

Sale

Speedometer Calibrator | Inline | Chevrolet Silverado/GMC Sierra 2500HD/3500HD | 2017-2018 | Rough Country | 90005

Vendor:
Rough Country

Regular price $169.95

Regular price ~~$186.95~~ Sale price $169.95

Sale
Speedometer Calibrator | Inline | Diesel | Chevrolet Silverado/GMC Sierra 2500HD/3500HD | 2017-2019 | Rough Country | 90005_A

Sale

Speedometer Calibrator | Inline | Diesel | Chevrolet Silverado/GMC Sierra 2500HD/3500HD | 2017-2019 | Rough Country | 90005_A

Vendor:
Rough Country

Regular price $169.95

Regular price ~~$186.95~~ Sale price $169.95

Sale
Speedometer Calibrator | Inline | Toyota Tacoma 4WD | 2016-2021 | Rough Country | 90043

Sale

Speedometer Calibrator | Inline | Toyota Tacoma 4WD | 2016-2021 | Rough Country | 90043

Vendor:
Rough Country

Regular price $179.95

Regular price ~~$197.95~~ Sale price $179.95

Sale
Speedometer Calibrator | Inline | Toyota Tundra 4WD | 2014-2021 | Rough Country | 90017

Sale

Speedometer Calibrator | Inline | Toyota Tundra 4WD | 2014-2021 | Rough Country | 90017

Vendor:
Rough Country

Regular price $169.95

Regular price ~~$186.95~~ Sale price $169.95

Sale

1
2

Collection: Performance

QUICK LINKS

About Us
Contact Us
Join Our Newsletter List
Research & Development
Become a Dealer

POLICY LINKS

Customer Policies & Agreements
Shipping Policy
Return Policy
Warranty Information
Privacy policy

CONTACT INFO

STILLEN
3176 Airway Ave.
Costa Mesa, CA 92626

(866) 250-5542

sales@stillen.com

OUR MISSION

Blend racing‑grade innovation with uncompromising quality. From street to track, our diverse portfolio carries Steve Millen’s winning DNA.

Facebook
Instagram
X (Twitter)

Payment methods

© 2026, STILLEN Powered by Shopify

Choosing a selection results in a full page refresh.
Opens in a new window.

Accessibility

Adjust text colors

Adjust heading colors

Adjust background colors