SKU: 66451338419

Ironman Unsprung Clutch Kit for BMW Z4 2003 2.5L DOHC RWD Includes Lightened Flywheel

Sale price$428.38 Regular price$475.98
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Ironman Unsprung Clutch Kit for BMW Z4 2003 2.5L DOHC RWD Includes Lightened FlywheelThe Action Clutch Ironman Unsprung kit is engineered specifically for dedicated high powered race vehicles, delivering durability and reliable performance. It features our American Sintered Iron friction material with our Dual clamp load heavy duty pressure plate that ensures maximum torque holding capacity. The clutch engagement is aggressive with an on off feel, without introducing clutch chatter. Some light engagement noise and gear rattle may be

The Action Clutch Ironman Unsprung kit is engineered specifically for dedicated high powered race vehicles, delivering durability and reliable performance. It features our American Sintered Iron friction material with our Dual clamp load heavy-duty pressure plate that ensures maximum torque holding capacity. The clutch engagement is aggressive with an on/off feel, without introducing clutch chatter. Some light engagement noise and gear rattle may be experienced during operation due to the nature of the product. No compromises are made in this kit, ensuring optimal performance even under extreme conditions. This kit is not intended for street use and should only be used in race applications.

At Action Clutch, every kit is quality checked by one of our experienced engineers (with over 60 years of collective experience) and signed off as safe before being released as a finished product. This gives you peace of mind knowing that your Action Clutch will perform consistently every time.

NOTE: Purchasing the wrong type of clutch kit for your specific engine power output can result in premature clutch failure, damage to the transmission and void warranty eligibility. If you’re unsure what kit is right for you, contact Action Clutch direct.

250% INCREASED HOLDING CAPACITY OVER FACTORY KIT*
SPECIFICALLY ENGINEERED FOR TRACK USE APPLICATIONS ONLY

Specifications

Product Type Ironman Unsprung Clutch Kit
Product Weight (lbs)
SFI 1.1
 
What’s Included
  • Unsprung American Sintered Iron Disc
  • Dual Clamp Load HD Pressure Plate
  • Pilot Bearing / Bushing (when applicable)
  • Clutch Alignment Tool
  • Includes Lightened Flywheel

Break-in Requirements
500 street miles / Keep RPM’s under 4500, no more than half-throttle, no boost (if applicable).
Proper break-in is required in order to retain product warranty, ensure longevity and holding capacity.

Disclaimers
Using a clutch kit with an unsprung clutch disc on a stock or lightly modified power engine that is daily/street driven vehicle can break the rivets on the clutch disc hub. Unsprung clutch kits are not designed for daily/street use or any constant on/off engagement environment. This can be compared to running a marathon in sandals vs a proper running shoe. If you were to run the marathon ins sandals, you have no cushion or comfort and can cause injuries or wear you down faster than using proper running shoes.

*Increase in holding capacity is rated in Crank Torque, not Wheel Torque




SFI Spec 1.1 Replacement Flywheels and Clutch Assemblies

California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.p65warnings.ca.gov
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 66451338419

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 2374 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Dave Fenwick
Birmingham, US
★★★★★ 5
Good read
Format: Paperback
Very good book easy to read and follow
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2026
H
Verified Purchase
Hiram S Upchurch Jr
Chelsea, US
★★★★★ 4
Another quality Quick Start book
Format: Paperback
Haven't gotten that far into the book yet, but so far the material is good. IMO, the book would be far better if it had a spiral binding like the Python Quick Start books I bought. Programming type books are much easier and better to use when they lay flat. This would probably make the book more expensive to purchase, but would be well worth it. The contents of the book are well laid out starting with simple basic topics and progressing through the more advanced ones. The chapters on Asynchronous JavaScript and JQuery were, IMHO, light in the amount of information provided. The book is designed/written to provide a "quick start" on JS, but I think that there could have been more details provided for these two topics. All in all this book provides an adequate introduction to doing JS coding. Any plans on doing an advanced Javascript book to cover topics like map and other advanced programming constructs?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 27, 2024
A
Verified Purchase
AlyG
Dallas, US
★★★★★ 5
Great Javascript resource for learning the basics!
Format: Kindle
This book was a great resource for helping me to learn Javascript. It walked me through step by step and provided me with tools to build some solid skills. I found it immensely helpful and I think you will too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 15, 2025
J
Verified Purchase
Jdonovan43
Cuba, US
★★★★★ 5
Perfect book for beginners
Format: Paperback
I started designing my website using another book that covered HTML, CSS and JavaScript. I got pretty good with HTML, passable with CSS but could not get my head around JavaScript. Little code snippets that illustrated various functions just didn’t do it. This book is totally different. Using downloadable example code and the free Visual Studio Code editor, the author takes you step by step through slowly constructing a complete JavaScript-driven website. I found writing and debugging my own code to greatly enhance my understanding of the material. And while I’m yet to get to that stage, being able to do full-stack development using Node.js and Ajax is a major plus. This is the perfect book for beginners wanting to learn JavaScript. Highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2025
P
Verified Purchase
PocketKitty
Draper, US
★★★★★ 5
A great book you’ll need every day for your entire web developer career!
Format: Paperback
This book is great! I have been working on becoming a web developer and this book is a major help in filling in the gaps from other resources I’ve used. Many other resources don’t really explain why some things work the way they do, but this book explains it all! You’ll always want to have it around because it’s great to go back and reference when you’re having trouble. I highly recommend all of the Quick Start books! I’ve got the HTML/CSS, JavaScript, Python, and SQL books that I use daily! If you want to become a web developer or programmer, start with the HTML/CSS book and then branch off from there. You won’t regret it! They are all very beginner friendly and easy to understand. 💙
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2025

recommand products