STM Tuner Secondary Clutch for 2021 Polaris RZR XP Turbo/S, 2021-'22 Pro XP & 2022+ Turbo R

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Whether you’re running an OEM, TAPP, or STM primary clutch, the STM Tuner Secondary is a must-have addition to get the absolute most out of any power level. STM Tuner Secondaries are all-billet construction and feature a finned design that creates more airflow within the clutch housing to help lower belt and all-around clutch temperatures. Additional features include significantly enhanced belt grip, STM’s triple roller design for consistent up/back shifts that are smoother and faster, and improved engine braking, among others.

All EVP STM Tuners come fully assembled and include a secondary spring and helix spec'd to EVP's custom calibrations, as well as hardware kit for installation (additional spring rates and helix angles are available directly through STM).

For best results, EVP recommends running the STM Tuner Secondary Clutch with our variety of EVP-Spec TAPP Primary Clutch Calibrations, AVAILABLE HERE.

  • All-billet construction for added durability and reliability
  • Finned secondary design provides more airflow for lower belt and clutch temps
  • Includes secondary spring
  • Includes helix
  • Additional spring rates and helix angles available directly through STM
1 x STM Tuner Secondary Clutch for 2021 Polaris RZR XP Turbo/S, 2021-'22 Pro XP & 2022+ Turbo R
$1,130.00
113000
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$1,130.00
Quantity

Whether you’re running an OEM, TAPP, or STM primary clutch, the STM Tuner Secondary is a must-have addition to get the absolute most out of any power level. STM Tuner Secondaries are all-billet construction and feature a finned design that creates more airflow within the clutch housing to help lower belt and all-around clutch temperatures. Additional features include significantly enhanced belt grip, STM’s triple roller design for consistent up/back shifts that are smoother and faster, and improved engine braking, among others.

All EVP STM Tuners come fully assembled and include a secondary spring and helix spec'd to EVP's custom calibrations, as well as hardware kit for installation (additional spring rates and helix angles are available directly through STM).

For best results, EVP recommends running the STM Tuner Secondary Clutch with our variety of EVP-Spec TAPP Primary Clutch Calibrations, AVAILABLE HERE.

  • All-billet construction for added durability and reliability
  • Finned secondary design provides more airflow for lower belt and clutch temps
  • Includes secondary spring
  • Includes helix
  • Additional spring rates and helix angles available directly through STM

2021 Polaris RZR XP Turbo & Turbo S Models
2021-'22 Polaris RZR Pro XP Models
2022+ Polaris RZR Turbo R Models

STM POWERSPORTS WARRANTY & RETURN POLICY (FOR STM CLUTCHING COMPONENTS)

Seller warrants solely to Buyer that each product supplied under these Terms will, for 90 days from the date of the original purchase (the “Warranty Period”), conform to Seller’s written specifications during normal use and/or operation. Seller’s sole and exclusive obligation, and Buyer’s sole remedy for failure of any product to conform to the above warranty is, at the option of Seller, repair or replacement of the non-conforming product or a refund of the monies paid by Buyer for the non-conforming product. Buyer must notify Seller in writing during the Warranty Period of any failure by a product to conform to the above warranty. 

Buyer will pay for shipping of any non-conforming product to Seller and Seller will pay for return shipping to Buyer. Liability under this warranty will be reduced to the extent that:

  1. The product is not maintained according to Seller’s or the applicable manufacturer’s specifications.
  2. The product fails, malfunctions, or is damaged as a result of improper handling, improper storage conditions (including, but not limited to, where applicable, temperature and humidity), installation, maintenance, removal, modification or repair.
  3. The non-conformity is caused by casualty, abuse, or improper use
  4. The product is altered other than by Seller or with Seller’s express written approval.
  5. The product is installed, used, or configured other than as contemplated by the parties under the applicable Supply Agreement or at or in a place other than that contemplated by the parties under the applicable Supply Agreement.
  6. The product is used, operated, or connected with a third-party good or software not expressly designated by Seller’s documentation and specifications for the product.
  7. Any failure results from a design or specification supplied by Buyer.   Seller does not warrant any electrical components, normal wear and tear, or conditions resulting from misuse, abuse, negligence, accident, improper application, improper installation and/or improper alteration.

Primary and secondary clutches that are determined to have a defect in material or manufacturing will be replaced at no charge within 90 days of original purchase date. Any racing application is void from warranty. Warranty claims require the return of the product in its original packaging. A $75.00 fee will be charged for inspection.

Seller will determine, in its sole discretion, if any claims of failure were due to a defect in material or manufacturing. Warranty of premature wear will be determined by Seller, in its sole discretion. Buyer is responsible for shipping the alleged failed component to Seller and the return for warranty inspection. This warranty does not apply to any vehicle that has been altered in any way to include performance enhancements to the engine other than the original equipment design. 

Electrical components are not covered under any warranty and cannot be returned once installed or connected to power. Electrical components include but are not limited to: switches, ignition coils, CDI boxes, chips and regulators. Seller reserves the right to make the determination if the part has been subject to normal wear, misuse, abuse, negligence, accident, improper application, improper installation or alteration, and any such determination shall be final.

All warranty claims will be handled directly by the Seller. To obtain service under this warranty please contact the Seller for return authorization. Cost of removal, reinstallation, product pickup and delivery are the sole responsibility of the original Buyer. Retail customers must provide proof of purchase within 90 days for warranty to be honored.

ALL RETURNS FOR WARRANTY MUST BE PRE-APPROVED WITH AN RETURN AUTHORIZATION NUMBER DISPLAYED ON THE BOX. PRODUCT MUST BE RECEIVED WITHIN 10 DAYS OF DATE RETURN AUTHORIZATION IS ISSUED.

This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product represent and warrant that the product is purchased only in connection with EPA -certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law. Questions: Call Evolution Powersports at (715) 247-3862.

testimonials

My car is absolutely insane. LOVE it. Thank you for everything. Zero issues and even in 95 degree ambient it's not over heating dining or anything. This power dining is 100% perfect. Car is a beast. You guys Rock! - Dynomite Turbo Kit

Ernie

Evolution Powersports has a reputation of the utmost quality and attention to detail on every product they design. From within the industry and outside, I have heard nothing but great things about this company and my experience has been the same. If you are looking to make more reliable power this company can get you there. Both customer service and product design are top notch and they stand behind their work!

Blake S

Don’t spend much of your money here unless you want gobs and gobs of reliable power

Collision Vision

I wouldn’t go with another company if you payed me

Ryan L

If you truly want to build your project with the best possible parts available, buy EVO. They not only build with the best materials they test and test to make sure you are getting the performance gains they say you will but that the mods will be safe and keep the reliability of the machine as high as possible. Thanks again to both Jim and Todd. Keep it up guys!

John K

Great customer service!
I have had such a great experience with EVO over the course of a year, I wouldn’t even try going anywhere else. Prices are fair and the performance you receive is unreal!!

Dave B

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