--- product_id: 43395711 title: "Sun Race CSM680 Cassette 8-Speed 11-40T Black" brand: "sunrace" price: "KD 16.22" currency: KWD in_stock: true reviews_count: 8 category: "Sun Race" url: https://www.desertcart.com.kw/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black store_origin: KW region: Kuwait --- # 8-speed precision shifting 11-40T wide gear range for climbs durable lightweight metal build Sun Race CSM680 Cassette 8-Speed 11-40T Black **Brand:** sunrace **Price:** KD 16.22 **Availability:** ✅ In Stock ## Summary > ⚡ Shift faster, climb higher, ride stronger — own every trail with Sunrace CS-M680! ## Quick Answers - **What is this?** Sun Race CSM680 Cassette 8-Speed 11-40T Black by sunrace - **How much does it cost?** KD 16.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black) ## Best For - sunrace enthusiasts ## Why This Product - Trusted sunrace brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight Yet Robust:** Engineered from premium metal alloys to balance durability with minimal weight. - • **Trail-Ready Durability:** Built to withstand the toughest mountain biking conditions without compromise. - • **Wide 11-40T Gear Range:** Conquer steep climbs and fast descents with optimized cadence control. - • **Precision Machined Cogs:** High-accuracy teeth design ensures reliable power transfer and long-lasting performance. - • **Seamless 8-Speed Shifting:** Experience ultra-smooth gear transitions tailored for aggressive trail riding. ## Overview The Sunrace CS-M680 8-speed cassette features a wide 11-40T gear range engineered for mountain biking versatility. Crafted from durable yet lightweight metal alloys, it delivers smooth, precise shifting and enhanced climbing efficiency. Designed for 8-speed drivetrains, this cassette is ideal for trail, enduro, and all-mountain riders seeking reliable performance and long-lasting durability. ## Description Sunrace CS-M680 CSM680 11-40t 8-Speed MTB Cassette - Wide Range, Lightweight, and Durable Bike Gear Performance Upgrade your mountain biking experience with the Sunrace CS-M680 CSM680 11-40t 8-Speed MTB Cassette, engineered for versatile terrain and efficient power transfer. This high-performance cassette features a wide gear ratio from 11 to 40 teeth, providing optimal cadence and effortless climbing on steep trails or fast-paced descents. Materials & Construction Built with -grade steel and lightweight alloy components, the Sunrace CS-M680 cassette balances durability and weight savings. Its robust construction ensures long-lasting performance even under aggressive riding conditions, making it suitable for trail, enduro, and mountain biking enthusiasts. Performance & Engineering Designed to deliver smooth, precise shifting, the CS-M680 cassette pairs seamlessly with or compatible 8-speed drivetrains. The wide gear ratio allows for superior climbability and sprint capability, empowering riders to conquer challenging terrains with confidence. The lightweight design reduces rotational mass, enhancing acceleration and handling responsiveness. Components & Technology Featuring high-precision machining and a hardened steel construction, this cassette maintains excellent gear engagement and durability over extended use. The 8-speed configuration ensures compatibility with a broad range of mountain bike setups, while the wide-range gearing minimizes the need for multiple gear changes, offering a more efficient pedaling experience. Style & Use Case Ideal for mountain bikers seeking reliable and versatile gearing, the Sunrace CS-M680 cassette is perfect for trail riding, enduro racing, and adventure cycling. Its sleek black finish adds a professional, performance-oriented look to your bike, complementing various bike styles and setups. Innovative Features The CS-M680 cassette's innovative wide range ratio and lightweight engineering provide enhanced climbing Review: Great Budget Friendly Conversion Option - Fits right up to a Shimano freehub. Comes with the locking ring, no derailleur adapter. Similar to what another individual wrote, this is almost a must have for anyone building the “Family Beater/Bike Path” bike. This was installed on free to me GT Timberline 1.0 size large that’s being converted to 1x drivetrain. It’ll be used to pull a kids trailer while I sip on a big ol’ Chic Filet soda riding down bike paths. I have what looks to be a Shimano Altus long cage on the bike and was able to get it to work by replacing the b-screw with a longer one. You will require a chain whip and cassette tool to perform the install. All in all, a good budget friendly option for converting your drivetrain. Review: Great budget cassette, can climb for days now - Used this cassette with a 1x conversion and have great gear ratios for the hilly riding I do. Easy install and dialed in with an equally affordable shimano acera derailleur, chain shifts through the gears perfectly. Have put a couple hundred miles on it and hasnt skipped a beat, though I do clean & lube the drivetrain often ## Features - Optimize your mountain biking performance with the Sunrace CS-M680 11-40t 8-Speed MTB Cassette, engineered for durability and smooth shifting in challenging terrains. - Constructed from lightweight yet robust materials, this wide ratio cassette ensures minimal weight addition while maintaining superior strength for aggressive trail riding. - Featuring an innovative gear spread (11-40t) and precisely machined cogs (11,13,15,18,22,28,34,40), it delivers seamless gear transitions and optimized cadence across varied trail conditions. - Designed specifically for 8-speed drivetrain compatibility, the Sunrace CS-M680 enhances your bike's performance with improved power transfer and efficient climbing capabilities. - Ideal for mountain bikers seeking high-performance, durable, and versatile gear solutions, this cassette is perfect for aggressive trail riding, enduro, and all-mountain biking adventures. ## Technical Specifications | Specification | Value | |---------------|-------| | Item Package Dimensions L x W x H | 8.07 x 7.09 x 1.93 inches | | Package Weight | 0.56 Kilograms | | Item Dimensions LxWxH | 8.1 x 7.1 x 2 inches | | Item Weight | 1.05 Pounds | | Brand Name | SunRace | | Warranty Description | Limited Warranty | | Model Name | CS-M680 | | Color | Black | | Material | Metal | | Suggested Users | unisex-adult | | Number of Items | 1 | | Manufacturer | Sunrace | | Part Number | CSM680 8AX | | Style | Cassettes | | Included Components | Cassettes | | Size | Default | ## Images ![Sun Race CSM680 Cassette 8-Speed 11-40T Black - Image 1](https://m.media-amazon.com/images/I/81UeBNImdUL.jpg) ## Questions & Answers **Q: What are the tooth counts for each of the cogs on this cassette?** A: www.sunrace.com/files/catalog/files/470/Specifications%20-%20Cassettes%20MTB%208-Speed.pdf 11 13 15 18 11 18 34 40 **Q: Will i be able to use this with a 7 speed derailleur if i take out one cog and put the lockring on the 7th cog?** A: 5/6/7/8s chains and the spacing between the cogs are all consistent. The shifters and derailleurs will move the same amount for each shift, but only move a set number of increments for index shifting. So long as you set the limits you don't have to remove any cogs you just won't reach them if your shifter has a smaller number of index increments than the cassette has cogs. Use your limit screws to ignore one end or the other of the gear range. The 7-speed freehub body is too narrow to receive all eight cogs so you could remove the 3rd or 4th Cog if the cassette is not riveted together or riveted to splined carriers. That would give you a 7 speed wide range cassette with a larger jump to the easy side Midway up the cassette what would otherwise perform just fine. The only catch would be if the rear derailleur didn't have the range or reach for a huge rear COG I think the largest you could get away with is likely a 40 tooth first gear. You should be picking up a higher gear as well, since many 7s cassettes are 12T or 13T cogs! **Q: Will this fit and replace the sram 11-34 8sp cassette ?** A: Yes they are consistent. **Q: Would this work on a Sram hub, or is it made for Shimano hubs?** A: it will work with shimano compatible freehubs. It will not work with SRAM "XD drive" freehubs. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Budget Friendly Conversion Option *by K***N on July 10, 2025* Fits right up to a Shimano freehub. Comes with the locking ring, no derailleur adapter. Similar to what another individual wrote, this is almost a must have for anyone building the “Family Beater/Bike Path” bike. This was installed on free to me GT Timberline 1.0 size large that’s being converted to 1x drivetrain. It’ll be used to pull a kids trailer while I sip on a big ol’ Chic Filet soda riding down bike paths. I have what looks to be a Shimano Altus long cage on the bike and was able to get it to work by replacing the b-screw with a longer one. You will require a chain whip and cassette tool to perform the install. All in all, a good budget friendly option for converting your drivetrain. ### ⭐⭐⭐⭐⭐ Great budget cassette, can climb for days now *by J***Y on July 27, 2023* Used this cassette with a 1x conversion and have great gear ratios for the hilly riding I do. Easy install and dialed in with an equally affordable shimano acera derailleur, chain shifts through the gears perfectly. Have put a couple hundred miles on it and hasnt skipped a beat, though I do clean & lube the drivetrain often ### ⭐⭐⭐⭐⭐ No hassle fitment! Made my upgrade easy! *by D***E on March 21, 2025* A great upgrade for an Aventon LEVEL II, along with a Shimano Acera derailleur! 5 stars for quick shipping, price and ease of setup! (Recommended!) ## Frequently Bought Together - Sun Race CSM680 Cassette 8-Speed 11-40T Black - KMC Chain 8SP X8-Silver/Grey - X8.93 - Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black --- ## 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.com.kw/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black](https://www.desertcart.com.kw/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-18*