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I acknowledge that the product(s) being purchased () was/were designed and intended for closed course competition use only. The product(s) is/are neither designed nor intended for use on public roads or land and is against Federal and State regulations to do so. By proceeding with this purchase, I , agree to only use the product(s) for closed course competition.

If an ECU tune was purchased, please send your unmodified and undamaged OEM ECU to TST Industries, located at 623 Pleasant St, Lake Helen, FL 32744.

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U.S. customers are offered a free shipping option for orders with a discounted subtotal greater than $150.00 (before taxes applied). The order's shipment destination must reside within the United States of America. The free shipping options still utilize our standard postage providers and 3rd party shipping companies. Does not apply to large items such as exhausts, stands, and bodywork shipping. All terms and conditions that apply to normal orders will continue to apply to orders with a free shipping option.

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An item returned within 30 days of purchase, that includes an accurate RMA#, in a perfectly new, unopened condition, and that complies with our other return policies, will not be charged a restocking fee.

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The most common product related questions are answered in the tabs section on this page. Be sure to carefully read through the "Product Details", "In the Box", and "FAQs" tabs. In addition, a lot of our products have comprehensive videos demonstrating installations and product features. You can find those videos in the "Videos" tab.

Note: Some product pages may not have all the tabs mentioned above. Please read through all the available tabs to find the answers to your questions. If you still need assistance, please use the "ASK A QUESTION ABOUT THIS PRODUCT" button below the tabs section.
NO ADDITIONAL COST: You pay at the time of checkout and never have to worry again.
COVERAGE: Our Limited Extended Warranty starts on the date of purchase. It covers all manufacturer defects for our TST Exclusive products. (Products manufactured by us with the exception of our WORX products)
EXPERT HELP: As always our team is here to help. If you’re unsure about this warranty or if your product is eligible, feel free to reach out to us and we can help answer any questions you may have!
PRODUCT ELIGIBILITY: TST will offer our Limited Extended Warranty on all products manufactured by TST Industries.
EASY CLAIMS PROCESS: Simply click the “Contact Us” page and fill out the “Returns Form” to begin the warranty process. Once our team receives your email and initiates the RMA, you can send your product back to us and we will repair/replace the product at no cost as long as a manufacturer defect is found. What qualifies as a manufacturer defect? Check out our Terms and Conditions for some examples!

TST WORX 520 Lightweight Aluminum Rear Sprocket for Yamaha FZ-09 / MT-09 / XSR900 / Tracer 900

  • TST WORX 520 Lightweight Aluminum Rear Sprocket for Yamaha FZ-09 / MT-09 / XSR900 / Tracer 900
  • Ultra lightweight 7075-T6 aluminum alloy construction improves performance and durability on your Yamaha
  • CNC machined using specifically designed techniques to ensure extreme precision.
  • Black anodized finish provides a rear sprocket that stands out with style and design.
  • The TST WORX Rear Sprocket was designed bring performance to the track or street.
  • Developed, tested, and proven on our Moto3 National Championship winning TST R3 Superbike.
  • Shown on the Yamaha MT-07.
  • Designed to deliver more power to the asphalt.
  • Developed from race engineers within the TST WORX race program.
  • Upgrade to a lightweight and durable rear sprocket on your Yamaha FZ-09 / MT-09 / XSR900.
  • Close up view of the TST WORX durability demonstrated on the Yamaha MT-07 after 4,000 miles.

TST WORX 520 Lightweight Aluminum Rear Sprocket for Yamaha FZ-09 / MT-09 / XSR900 / Tracer 900

TST WORX 520 Lightweight Aluminum Rear Sprocket for Yamaha FZ-09 / MT-09 / XSR900 / Tracer 900

Our TST WORX 520 Lightweight Aluminum Rear Sprocket was developed to provide dramatic component weight loss and exceptional durability by combining high-quality 7075-T6 aluminum alloy with advanced manufacturing and hardening anodized finishing techniques. So whether you're riding the street or chasing the podium at the track, our TST WORX Rear Sprocket was designed to provide increased and long-lasting performance on your Yamaha.

Available in 40-48 tooth counts.

CONVERSION REQUIRED: 520 front sprocket and chain required for proper and safe operation.

Applications:

  • Yamaha MT-09 / FZ-09 | 2014, 2015, 2016, 2017, 2018, 2019, 2020
  • Yamaha XSR900 | 2016, 2017, 2018, 2019, 2020, 2021, 2022
  • Yamaha FJ-09 / Tracer 900 / Tracer 900 GT | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022

This product is part of our Worx Program!

Learn More!
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SKU
2014 - 2016/MT-09 / FZ-09/Yamaha
TST WORX 520 Lightweight Aluminum Rear Sprocket for Yamaha FZ-09 / MT-09 / XSR900 / Tracer 900
 
Price: $69.99
Select Tooth Count
Quantity

ATTENTION:

If buying this product as part of the Buy Together bundle below, define these options there.

▾
  • Overview
  • In the Box
  • Recommended Accessories

Features

  • CNC machined from lightweight 7075-T6 aluminum alloy using advanced techniques
  • Full sprocket treatment with Type III black anodized hard-coat for long-lasting durability
  • Proprietary matte black anodized finish
  • Proprietary tooth profile
  • Ultra-smooth tooth transition geometry
  • 62.5% lighter than the stock Kawasaki rear sprocket
  • Available in 40-48 tooth profiles
  • Requires 520 front sprocket and chain conversion

Description

Designed and built by race engineers in the TST WORX race program, our Lightweight Aluminum Rear Sprocket was developed with the harshest riding conditions in mind. Our use of the best materials and manufacturing procedures ensure practical longevity while maximizing weight loss for increased performance and power delivery. The blend of high-quality material, advanced hardening procedures, lightweight design, proprietary tooth profile, and ultra-smooth tooth transitions ensure exceptional performance, even during the most demanding riding situations.

We produce every TST WORX Rear Sprocket from 7075-T6 aluminum alloy. This high-quality material is CNC machined using a propriety holding plate process developed to eliminate vibration during the machining process, ensuring extreme precision and material integrity. We then treat the entire rear sprocket with a matte black Type III hard coat anodizing process that penetrates the aluminum and builds an ultra-hard surface layer, resulting in a light weight sprocket with exceptional durability characteristics capable of taking on the rigorous demands of the street and track. It's time to give your Kawasaki the sprocket and performance it deserves.

Application Spec Sheet

Model Years OEM Pitch OEM Front Sprocket OEM Rear Sprocket Chain Length
Yamaha MT-09 / FZ-09 2014 - 2020 525 (CONVERSION REQUIRED) 16 45 110
Yamaha XSR900 2016 - 2021 525 (CONVERSION REQUIRED) 16 45 110
Yamaha FJ-09 / Tracer 900 / Tracer 900 GT 2015 - Current 525 (CONVERSION REQUIRED) 16 45 118

WORX Rear Sprocket Weight Guide

Sprocket Tooth Count Weight (ounces)
40 Teeth 7.97 ounces
41 Teeth 8.47 ounces
42 Teeth 8.82 ounces
43 Teeth 9.17 ounces
44 Teeth 9.59 ounces
45 Teeth 10.09 ounces
46 Teeth 10.45 ounces
47 Teeth 10.87 ounces
48 Teeth 11.31 ounces
  • (1) TST WORX 520 Lightweight Aluminum Rear Sprocket (your choice of tooth count)
  • 1 Year Warranty (See our warranty policy here)
warning

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

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Reviews

Hyperpack Bundle for Yamaha MT-03 2020+
Hyperpack Bundle for Yamaha MT-03 2020+
This looks very clean on the bike. I am not a very hands-on person and I could install it very easily. Customer support was great too!
Kendry Grullon
Nov 18, 2024
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