Shimano 105 CS-R7101 12-Speed Cassette 11-34T: Hyperglide+ (£35)
The Shimano 105 CS-R7101 is a 12-speed Hyperglide+ road cassette in an 11-34T range, on sale at Tredz. We have not tested it. This page collects what Tredz lists and the current price.
Available now: Shimano CS-R7101 105 12-speed Cassette 11-34T — £34.95 at Tredz (listed RRP £74.99), correct at time of writing, 28 October 2026.
What the retailer lists
- Range: 11-34T, 12-speed, for super narrow 12-speed chains.
- Shifting: Hyperglide+ sprockets with a computer-designed tooth shape and contoured shift gates, which Shimano says give smooth shifts under load.
- Weight saving: the largest sprockets sit on a lightweight alloy carrier, and the sprockets are cut away and drilled.
- Finish: nickel-plated for corrosion resistance, with a pearl-bright steel lockring.
Where it fits for triathletes
The points below are our reading of the listed features, not test results.
- Wear item. A cassette is a consumable, so a 105 replacement at £34.95 suits riders keeping a 12-speed 105 bike running. We have not tested it.
- Check compatibility. It needs a 12-speed freehub body and a 12-speed chain.
- Price. At £34.95 it is £40.04 below the RRP.
Where to buy
Tredz lists the Shimano CS-R7101 105 12-speed Cassette 11-34T at £34.95 at time of writing, and the link below goes to the same product page.
Related guides
See also the best triathlon bike cassettes guide, the Shimano 105 Di2 R7150 review and the best bike cassettes guide.
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