--- product_id: 43395711 title: "Sun Race CSM680 Cassette 8-Speed 11-40T Black" brand: "sunrace" price: "R1561" currency: ZAR in_stock: true category: "Sun Race" url: https://www.desertcart.co.za/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black store_origin: ZA region: South Africa --- # 8-speed precision shifting 11-40T wide gear range durable lightweight steel Sun Race CSM680 Cassette 8-Speed 11-40T Black **Brand:** sunrace **Price:** R1561 **Availability:** ✅ In Stock ## Summary > ⛰️ Elevate your ride with precision and power – don’t just ride, dominate the trail! ## Quick Answers - **What is this?** Sun Race CSM680 Cassette 8-Speed 11-40T Black by sunrace - **How much does it cost?** R1561 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/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 - • **Sleek Black Finish:** Upgrade your bike’s look with a professional, stealthy aesthetic that matches your performance. - • **Lightweight Yet Rugged:** Optimized steel construction reduces weight without sacrificing durability for long-lasting performance. - • **Trail-Ready Durability:** Built to withstand aggressive mountain biking conditions, ensuring your ride never quits. - • **Wide 11-40T Gear Range:** Conquer steep climbs and fast descents with unmatched versatility and power. - • **Seamless 8-Speed Shifting:** Experience crisp, reliable gear changes that keep you ahead on every trail. ## Overview The Sunrace CSM680 is an 8-speed mountain bike cassette featuring a wide 11-40T gear range for versatile trail performance. Constructed from durable, lightweight steel, it delivers smooth, precise shifting and enhanced climbing power. Designed for aggressive off-road use, it fits most 8-speed drivetrains and adds a sleek black finish to your bike’s drivetrain. ## Description Maximize your mountain biking performance with the Sunrace CS-M680 CSM680 11-40t 8-Speed Cassette - a versatile and durable upgrade designed for advanced riders seeking wide gear ratios and lightweight efficiency. Engineered with precision, this cassette features a robust steel construction paired with innovative engineering to provide smooth, reliable shifting across a broad range of terrains. Materials & Construction: Constructed from steel, the Sunrace CSM680 cassette offers superior durability and corrosion resistance, ensuring long-lasting performance in demanding off-road conditions. Its lightweight design minimizes rotational mass, enhancing acceleration and climbing efficiency without compromising strength. Performance & Engineering: The wide gear range of 11-40T makes the CSM680 ideal for tackling challenging ascents, technical descents, and varied trail conditions. With precision-machined components and optimized gear spacing, this 8-speed cassette delivers seamless, crisp shifting for a confident ride on the trail or rugged terrain. Components & Technology: Designed with compatibility in mind, the cassette fits HG freehub bodies and integrates flawlessly with most 8-speed drivetrains. Its innovative design ensures quick installation and secure engagement, allowing riders to focus on performance without technical delays. Style & Use Case: Featuring a sleek black finish, the Sunrace CSM680 not only boosts your bike's performance but also adds a clean, professional aesthetic to your drivetrain. Perfect for mountain bikers, trail riders, and off-road enthusiasts looking for a reliable, lightweight gear upgrade that handles steep climbs, technical sections, and high-speed descents. Innovative Features: The wide ratio gear set provides maximum versatility for various trail conditions, making it an excellent choice for riders seeking enhanced climbing ability and smooth acceleration. Its lightweight profile combined with durable constructio ## Features - 8 speed, wide ratio MTB cassette - Constructed from durable, lightweight materials to optimize bike weight without sacrificing strength or longevity, enhancing overall ride efficiency. - Engineered with advanced gear spacing (11,13,15,18,22,28,34,40t) for smooth, precise shifting across all gears, ensuring reliable performance on mountain adventures. - Designed specifically for mountain biking enthusiasts, this cassette provides versatile use case options from trail riding to aggressive downhill, with a focus on durability and resilience. - Innovative wide ratio gear setup offers maximum climbing power and speed versatility, making it an essential upgrade for riders seeking improved performance and gear range in challenging conditions. ## 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. ## 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.co.za/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black](https://www.desertcart.co.za/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-23*