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Sunrace RD-M37 7-Speed Rear Derailleur | Polymer & Steel MTB, Mid-Engine, Direct Mount
Reference Number: 3CC6CO
Upgrade Your Mountain Biking Performance with the Sunrace RD-M37 Rear Derailleur - 7-Speed, Mid-Engine Polymer & Steel Construction
Maximize your bike's shifting efficiency and durability with the Sunrace RD-M37 Rear Derailleur, a reliable choice for serious mountain bikers and cycling enthusiasts. Engineered for durability and performance, this 7-speed derailleur is designed to handle rugged trails and demanding terrain.
Premium Materials and Engineering
Constructed from a high-quality blend of engineered polymer and steel, the Sunrace RD-M37 offers exceptional strength and lightweight performance. The polymer components reduce weight without sacrificing durability, while the steel parts ensure longevity and resistance to impact. At just 265 grams, it delivers a balanced combination of sturdy build and nimble handling, ideal for mountain biking adventures.
Optimized Components & Technology
Featuring a 2-to-1 ratio and a maximum sprocket size of 30 teeth, this derailleur provides smooth and precise shifting across all 6/7 gears. Its mid-cage design ensures compatibility with a wide range of MTB cranksets, while the direct mount system offers secure attachment and easy installation. The included removable hanger enhances versatility and simplifies maintenance, making it an excellent upgrade for your existing drivetrain.
Performance & Use Case
Designed to stand up to the rigors of mountain biking, the Sunrace RD-M37 excels in trail, cross-country, and aggressive riding environments. Its robust construction and reliable gear indexing provide consistent performance over rough terrain, helping you maintain control and confidence on every ride.
Innovative Features & Compatibility
This derailleur is comparable to Shimano's RD-TY21 and RD-A070 models, offering a cost-effective alternative without compromising quality. Its innovative polymer and steel construction not only ensure durability under harsh conditions but also reduce overall bike weight, enhancing overall ride efficiency.
Key Specifications:
- Gear Wrap: 37
- Mount: Mid
- Gear Ratio: 2to1
- Max Sprocket Size: 30 teeth
- Weight: 265g
Perfect for mountain bikers seeking durable, lightweight, and reliable drivetrain components. Elevate your bike's shifting performance with the Sunrace RD-M37 Rear Derailleur - engineered for adventure, built to last.
- High-performance 7-speed MTB rear derailleur engineered with durable polymer and steel construction for enhanced strength, longevity, and reliable shifting.
- Designed with a direct mount system and removable hanger for easy installation, maintenance, and compatibility with a wide range of mountain bikes.
- Built with advanced gear ratios (2:1) and a wide 30-tooth max sprocket capacity, delivering precise, smooth, and confident gear transitions on rugged terrain.
- Lightweight at only 265 grams, offering an optimal balance between durability and performance for aggressive trail riding and mountain biking exigeances.
- Compatible with Shimano-driven drivetrains (RD-TY21 / RD-A070 equivalents), ensuring seamless integration with your existing bike components for a cohesive shifting experience.
| Item Specifications | |
|---|---|
| Wrap | 37 |
| Cage/Mount | Mid |
| Ratio | 2to1 |
| Max | 30 |
| Wgt | 265g |
Why 365 Cycles?
365 Cycles is an Authorized Sunrace Dealer, and we offer the Full Sunrace Warranty!
Fast Shipping!
Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews!
365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.
At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.
We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.
Shipping & Handling
Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.Please allow 1-2 business days for your order tracking to update.
- Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
- Friday afternoon -Sunday orders ship the following Monday
- Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.
Combined Shipping Discounts
To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.- Be sure you are using the US site: https://www.ebay.com
- Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
- Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
- Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
- You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.
Returns
365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.
Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.
Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.
If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!
Exchanges
If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.
