--- product_id: 120778189 title: "BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension" brand: "bolany" price: "3337768₫" currency: VND in_stock: true reviews_count: 8 url: https://www.desertcart.vn/products/120778189-bolany-8-9-10-11-12-speed-cassette-11-32t store_origin: VN region: Vietnam --- # High Tension Steel 8-12 Speed Rust Resistant BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension **Brand:** bolany **Price:** 3337768₫ **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Gear Up for Adventure! ## Quick Answers - **What is this?** BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension by bolany - **How much does it cost?** 3337768₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/120778189-bolany-8-9-10-11-12-speed-cassette-11-32t) ## Best For - bolany enthusiasts ## Why This Product - Trusted bolany brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Wide Tooth Ratios:** Available in multiple tooth ratios (11-32T to 11-52T) to conquer any terrain. - • **Durable Construction:** Crafted from high-tension steel with a nickel-plated finish for long-lasting performance. - • **Versatile Speed Options:** Choose from 8 to 12 speeds for ultimate flexibility. - • **Weather-Resistant Design:** Built to withstand the elements, ensuring rust-free rides. - • **CNC Precision Engineering:** Includes a CNC rear derailleur hanger extension for seamless shifting. ## Overview The BOLANY 8-9-10-11-12 Speed Cassette offers a versatile range of speeds and durable construction, making it the perfect upgrade for mountain biking enthusiasts. With multiple tooth ratios and a rust-resistant design, this cassette ensures optimal performance in any weather condition. ## Description Product description [introduction] genuine BOLANY wide tooth gear mountain flywheel, big tooth flywheel, for single tooth disc climbing more easily,! Tooth ratio and weight： 8 speed 11-32T: 11-13-15-18-21-24-28-32T weight：297g 8 speed 11-36T: 11-13-15-18-21-24-30-36T weight：381g 8 speed 11-40T: 11-13-16-20-24-28-34-40T weight：414g 8 speed 11-42T: 11-13-16-20-24-30-36-42T weight：441g 9 speed 11-32T: 11-13-15-17-19-21-24-28-32T weight：318g 9 speed 11-36T :11-13-15-18-21-24-28-32-36T weight：399g 9 speed 11-40T: 11-13-16-20-24-28-32-36-40T weight：517g 9 speed 11-42T :11-13-16-20-24-28-32-36-42T weight：529g 9 speed 11-46T: 11-13-16-20-24-28-34-40-46T weight：480g 9 speed 11-50T: 11-13-16-20-24-30-36-42-50T weight：489g 10 speed 11-36T: 11-13-15-17-19-21-24-28-32-36T weight：355g 10 speed 11-40T :11-13-15-18-21-24-28-32-36-40T weight：419g 10 speed 11-42T: 11-13-15-18-21-24-28-32-36-42T weight：515g 10 speed 11-46T: 11-13-15-18-21-24-28-34-40-46T weight： 549g 10 speed 11-50T :11-13-16-20-24-28-32-36-42-50T weight： 589g 11 speed 11-40T :11-13-15-17-19-21-24-27-31-35-40T weight：530g 11 speed 11-42T :11-13-15-17-19-21-24-28-32-37-42T weight：542g 11 speed 11-46T: 11-13-15-17-19-21-24-28-32-37-46T weight：559g 11 speed 11-50T: 11-13-15-18-21-24-28-32-36-42-50T weight：603g 11 speed 11-52T :11-13-15-18-21-24-28-34-40-46-52T weight：700g 12 speed 12-50T :11-13-15-17-19-21-24-28-32-38-44-50T weight： 614g 12 speed 12-52T: 11-13-15-18-21-24-28-32-36-40-46-52T weight：710g Package Contents: 1* freewheel+1*Bicycle black rear rack transmission hook extender Note: 11-40T and below gear ratio does not include black rear transmission hook extender. Have a nice shopping day. ## Features - Flywheel Adjustable Gear Number 8/9/10/11/12speed - Tooth ratio:11 42T Cassette Cogs 11 32/36/40/42/46/50/52T - Material:high tension steel, wear resistant,nickel plated surface, bright silver, no rust - With CNC Rear Derailleur Hanger Extension ## Images ![BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension - Image 1](https://m.media-amazon.com/images/I/7107I7-AkOL.jpg) ![BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension - Image 2](https://m.media-amazon.com/images/I/71fI5dW5AUL.jpg) ![BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension - Image 3](https://m.media-amazon.com/images/I/51cQ6MupMWL.jpg) ![BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension - Image 4](https://m.media-amazon.com/images/I/51YKKEVdCmL.jpg) ![BOLANY 8-9-10-11-12 Speed Cassette 11-32T 11-36T 11-40T 11-42T 11-46T 11-50T 11-52T Wide Ratio MTB Bicycle Part Freewheel Sprocket with Rear Derailleur Extension - Image 5](https://m.media-amazon.com/images/I/511Mu-qxnoL.jpg) ## Available Options This product comes in different **Colour** options. ## Customer Reviews ### ⭐⭐⭐⭐ 4.0 out of 5 stars Check the 3 fixing pins on the cluster are tight before fitting. *by S***. on Reviewed in the United Kingdom on 25 December 2022* I bought a 9 speed 11-42. It arrived from China very, very quickly, well before the estimated date. Securely and safely packaged with padding around the teeth. There is a cluster of 7 gears together, then 2 smaller gears which slide onto the freehub splines individually, and the lockring. The derailleur hanger extension was sellotaped to the inside of the box.The 7 piece cluster is held together by 3 pins equally spaced around the centre hole. The pins have a T10 torx head. These were all a little loose and there was some movement between the gears, they would move round a little, like the hands of a clock. I have the correct tool so I tightened them and all the play was removed. The 3 pins protrude very slightly from the front face of the gear cluster but there are 3 small cutouts from the next gear that buts up to the pins to allow for this. Because there is a master spline the gears can only go on the freehub in one way so the cutouts will always line up with the pins. Well thought out.The only reason I knew to check for play was because I have previously had a gear cluster with this 'clock rotation' problem. Some of the individual gears cut into and damaged the splines of the freehub which then needed replacing along with the cluster, so it is worth checking before fitting.There is plenty of shaping to the teeth and gear faces so it looks like the chain will be helped to move smoothly between the gears. The internal splines on the lockring are well profiled and mate really snugly with the tightening tool. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars 3 years in.. *by M***L on Reviewed in the United Kingdom on 2 July 2022* Bought to covert to cheap 1x9. 3 years down the line no issues. Second one bought just in case... ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Very happy *by P***N on Reviewed in the United Kingdom on 8 February 2022* The cassette came well packaged . And seems good quality . Fitted straight in my road bike with no issues .Good price aswell . --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/120778189-bolany-8-9-10-11-12-speed-cassette-11-32t](https://www.desertcart.vn/products/120778189-bolany-8-9-10-11-12-speed-cassette-11-32t) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-19*