Shimano dura-ace cs-7900 10-speed cassette

Product Description The Dura-Ace CS-7900 10-speed cassette by Shimano - weight-optimised and torsion-resistant In the Shimano CS-7900 Dura-Ace cassette, the four largest sprockets are made of titanium to reduce weight and increase stiffness. The two lightweight metal carrier stars also reduce weight and offer high torsional strength. You can also use the CS-7900 cassette on 11-speed Road freewheels if you additionally use a 1.85 mm spacer. For 8 to 10-speed Road/MTB freewheels, the 1 mm spacer supplied is sufficient. Specifications:Application:RoadGearing:10-speedGradation:11-21, 11-23, 11-25, 11-28, 12-23, 12-25, 12-27Sprocket Material:steel, titaniumFreehub Compatibility:Shimano MTBNote:compatible with Shimano Road 11-/12-speed using a 1.85 mm spacerTechnical Information:Series:Dura-Ace 7900Spider:2 (aluminium)Recommended Chain:HG 10-speed (e.g. CN-6701)Features:HG cassetteweight-optimised sprocket designimproved shifting function for more precise shifts and less weightsuper-light, high-strength aluminium carrierthe four largest sprockets (7 to 10) made of titanium for less weight, higher rigiditydiverse gradationsnickel-plated steel sprocket , anodised lockringTechnology:HG Cassette Shimano Hyperglide cassettes (HG cassettes) have strategically-positioned ramps and special tooth profiles so that the chain can be completely guided directly onto the next sprocket. This prevents the chain from just touching the tips of the teeth before it actually touches down. This optimises the chain guide and enables fast, highly efficient shifting. Models:11-21: Gradation:11-12-13-14-15-16-17-18-19-21 tManufacturer Number:I-CS790010121 11-23: Gradation:11-12-13-14-15-16-17-19-21-23 tManufacturer Number:I-CS790010123 11-25: Gradation:11-12-13-14-15-17-19-21-23-25 tManufacturer Number:I-CS790010125 11-27: sold-out Gradation:11-12-13-14-15-17-19-21-24-27 tManufacturer Number:I-CS790010127 11-28: Gradation:11-12-13-14-15-17-19-21-24-28 tManufacturer Number:I-CS790010128 12-23: Gradation:12-13-14-15-16-17-18-19-21-23 tManufacturer Number:I-CS790010223 12-25: Gradation:12-13-14-15-16-17-19-21-23-25 tManufacturer Number:I-CS790010225 12-27: Gradation:12-13-14-15-16-17-19-21-24-27 tManufacturer Number:I-CS790010227Contents:1 x Shimano Dura-Ace CS-7900 cassette1 x Shimano aluminium lockring1 x Shimano 1 mm spacer (to mount to 8-/9-/10-speed freehub bodies) Weight: silver | 11-25: 180 g silver | 11-28: 187 g Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com