--- product_id: 43395711 title: "Sun Race CSM680 Cassette 8-Speed 11-40T Black" brand: "sunrace" price: "¥12350" currency: JPY in_stock: true category: "Sun Race" url: https://www.desertcart.jp/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black store_origin: JP region: Japan --- # 8-speed precision shifting 11-40T wide gear range durable lightweight steel Sun Race CSM680 Cassette 8-Speed 11-40T Black **Brand:** sunrace **Price:** ¥12350 **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?** ¥12350 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 The Sunrace CS-M680 is an 8-speed mountain bike cassette with a wide 11-40 tooth gear range. It features eight cogs sized 11, 13, 15, 18, 22, 28, 34, and 40 teeth. This lightweight cassette is black in color and weighs 456 grams. The model number is CSM680. ## Features - 8 speed, wide ratio MTB cassette - Wide gear range from 11 to 40 teeth supports varied terrain riding. - Constructed with eight cogs sized 11, 13, 15, 18, 22, 28, 34, and 40 teeth. - Lightweight design weighing 456 grams reduces overall bike weight. - Finished in black color for a sleek and durable appearance. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N7VRAFM | | Best Sellers Rank | #469,797 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #396 in Bike Cassettes & Freewheels | | Brand Name | SunRace | | Color | Black | | Customer Reviews | 4.6 4.6 out of 5 stars (171) | | Date First Available | January 16, 2017 | | Included Components | Cassettes | | Item Dimensions LxWxH | 8.1 x 7.1 x 2 inches | | Item Package Dimensions L x W x H | 8.07 x 7.09 x 1.93 inches | | Item Weight | 1.1 pounds | | Manufacturer | Sunrace | | Material | Metal | | Model Name | CS-M680 | | Number of Items | 1 | | Package Weight | 0.56 kg | | Part Number | CSM680 8AX | | Size | Default | | Style | Cassettes | | Suggested Users | Unisex-Adult | | Warranty Description | Limited Warranty | ## 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.jp/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black](https://www.desertcart.jp/products/43395711-sun-race-csm680-cassette-8-speed-11-40t-black) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-04*