The rear derailleur is the heart of a bicycle's derailleur gearing system: it keeps the chain tensioned and moves it precisely across the sprockets of the cassette with every shift. It is mounted on the rear dropout and is typically made from a combination of forged or cast aluminium and steel components, keeping it sturdy yet lightweight.
When buying, the most important considerations are compatibility with your existing groupset and the number of gears – a 9-speed derailleur such as the Shimano Sora RD-R3000, for example, suits bikes with nine sprockets at the rear. The largest supported sprocket size and the mounting type (e.g. direct mount or conventional bolt-on) also determine whether it will fit your frame. Derailleurs in this category are suitable for road, trekking and fitness bikes, and for replacing worn or crash-damaged parts.
High-quality carbon gravel bikes with premium components at fair prices. Designed for adventure.
High-quality carbon construction for maximum stiffness at minimum weight. Optimized for gravel and allroad.
Shimano GRX groupsets and hydraulic disc brakes for perfect control in any terrain.
Tire clearance up to 50mm, multiple mounting points for bags and fenders. Perfect for bikepacking and touring.
Optimized frame geometry for comfort on long rides and agility on technical trails.
Each bike is individually assembled for you and adapted to your needs - Custom Built.
Full manufacturer warranty on all RINOS bikes. We stand behind the quality of our products.
Optionally available: Professional assembly and adjustment by certified mechanics.
No middlemen means better prices with the same premium quality.
★★★★★ 4.4 out of 5 · 351 reviews on Trustpilot
Trustpilot review
Despite several delivery problems caused by DPD, my experience with Rinos was excellent. They responded to my emails incredibly quickly, often within 15 minutes, and handled every issue professionally. After DPD failed for the second time, they arranged a different courier and even upgraded me to a higher-tier bike at no extra cost. The bike itself looks solid, is well built, and comes with high-quality components…
Voss · 7/27/2026
Trustpilot review
I did buy a foldable Kabon bike this February, and it was a delightfull experience. The responsivness to my questions via e-mail was exceptionnal, as were the quality of the answers. Then, the bike was delivered really fast, 3 days before the expected date. And last but not least, the bike seems great. I have just used it for a few days, but everything is nice and smooth, as it should be. And the price is really…
Thierry A. · 3/1/2024
Trustpilot review
I bought 2 folding Karbon bikes to use from my yacht. Very happy about the purchase. They are high quality and very low weight, but stiff and has a good geometry. They came in my case with mudrails and rear rack. No instructions were included, but very litle assembling to do and easy to figure out. Rinosbike replies swiftly on both email and phone call. I took delivery on Madeira, so shipping time was 3 weeks. In no…
Michael B. · 12/13/2025
