Upgrade your bicycle's drivetrain with the Sunrace RD-M10 Rear Derailleur Friction Long with Hanger - a reliable, cost-effective component designed for smooth and precise shifting. Built for durability and performance, this derailleur is an essential upgrade for mountain bikes, touring bikes, and hybrid bikes requiring long cage versatility. Materials & Construction: Constructed from , lightweight materials, the Sunrace RD-M10 features a robust aluminum alloy cage optimized for long-lasting performance. Its durable construction ensures resistance to impacts and wear, making it ideal for demanding riding conditions. Performance & Engineering: Designed with a friction-based shifting system, the RD-M10 provides a reliable alternative to indexed derailleurs, offering consistent engagement and simple adjustment. The long cage (with hanger) accommodates up to 28 teeth, ensuring compatibility with wide-ranging gear setups and multi-speed configurations, with a gear ratio of 2:1 for smooth, accurate shifts. Components & Technology: Equipped with a long cage and dedicated hanger, this derailleur offers enhanced chain management, reducing derailment risk during aggressive riding or rough terrain. Its precise engineering allows for compatible chain wrap of approximately 35 links, optimizing chain retention and shifting performance across varied terrains. Style & Use Case: Perfect for riders seeking an affordable replacement or upgrade, the Sunrace RD-M10 is suitable for mountain biking, touring, commuting, and hybrid cycling. Its straightforward design makes maintenance simple, and its versatile compatibility ensures it fits a wide range of bike frames and gear configurations. Innovative & Differentiating Features: The Sunrace RD-M10's friction-based mechanism offers easy troubleshooting and adjustment, ideal for bikes without indexing systems or for riders preferring manual control over gear changes. Its lightweight profile (290 grams) balances durability with ag

Kyle S (comprador verificado) –
Affordable option for classic bikes!
I used this derailleur to replace the broken one on a ’79 Raleigh that I’m rebuilding. It bolted right up, accepts the 1/2″ x 3/32″ chain, and works seamlessly with the original friction shift lever. The original unit was a short cage but I couldn’t find a replacement anywhere, but I figured at $15 I’d try this long cage unit. It’s a perfect fit! Tuning is quick and easy (though it wasn’t necessary – it shifted perfectly right out of the package). Very satisfied with my purchase! It also arrived earlier than expected, which was a great bonus.
Ted W. (comprador verificado) –
Cheapest “Good” Derailleur on the Market
This is the best, cheap derailleur for friction shifting on the market. I have bought this for my commuter bike which has an 11-32T, 7-speed JIM cassette from Rivendell. Rivendell sells the same RD-M10 without the integrated hanger and they too believe it’s the best budget derailleur you can buy.While the product says it will only shift up to 28T, I can personally attest to it’s ability to shift up to 32T without any issue and, honestly, it can probably even manage 34T with some fiddling; 36+ might be pushing it. It can also be adjusted to accommodate up to 8 speeds, despite being advertised for 7 speed only.My only complaint about this derailleur, if I have any at all, is that it does not have a lot of spring tension. This is both a blessing and a curse. It makes shifting with a friction lever a bit easier, however, it leads to a bit of slack in the chain when in the smaller cogs. It’s not a problem by any stretch and does not impact performance of the product at all but I believe it’s been the cause of a few dropped chains for me (1×7 drivetrain). I would have liked to see a little bit stiffer of a return spring but, overall, I have no real problems with this thing for less than $10.
Valveamp (comprador verificado) –
You Get What You Pay For
It is a shockingly cheap looking derailleur, but it is mostly all right. The look of the stamped steel cage plate was a little off-putting, and it was difficult to unbolt, but I got it undone and was able to thread the chain through it.The one fault is that the limit screws aren’t tight, even wobble a little, and require washers (for the 32T end) and probably a metric nut for the other end of the range to stay in place, for the adjustments just won’t hold without these very minor modifications.Otherwise, on the four bike rides I have taken since installing it, it has shifted easily and does accommodate my 12-32T cassette.
John Wellington (comprador verificado) –
Works as expected.
Seams of good quality and shifts as expected.
susan g. (comprador verificado) –
Good product.
Very satisfied.
Amazon Customer (comprador verificado) –
Good quality part.
Good quality piece. Fixed a vintage Columbia 5 speed bike with it and it all works great.
Dmitriy (comprador verificado) –
Great Buy
Works and fits on my 1970 schwinn suburban.
nubblyman (comprador verificado) –
Replacement derailleur for 70’s Peugeot road bike
The rear long-cage SIMPLEX derailleur on our old Peugeot road bike snapped at the tab that holds the cable. I looked everywhere for information on replacement and came-up empty. SIMPLEX doesn’t appear to exist any more, though some short-cage derailleurs are still around but expensive. Looked at possible Shimano options, but they didn’t seem right, and not a particular good visual match to the SIMPLEX. This SUNRACE mimics the original Simplex in appearance and is a good match. It bolted into the Peugeot frame identically to the SIMPLEX, like it was made for it. The Simplex only had one retainer. To avoid taking the chain apart to fit it in the cage (under the retainer) I removed the cog which is mounted a screw, to get the chain out. The Sunrace has 2 retainers, so I had to take out both cogs to route the chain through the cage (this takes one side off the end arm but doesn’t release any springs). I then reset the cogs for the chain to run the proper way. Its a bit fiddly feeding the bolts through the cogs but I didn’t have a chain tool and I’m not sure this took any longer than it would have to take the chain apart etc. The bolts seemed to be metric. After I put it in and reconnected the old cable taut, it was a pleasant and unexpected surprise to find that it required no adjustment out of the bag. It’s as good or better than the one it replaced. Fit like a charm. Will have to see how it goes, but it appears well-made.