Campagnolo Ekar Cassette 13-Speed, 9-42T

The 1x system works best for gravel, with the 13-speed configuration enabling it to cover a full range of gearing ratios – and what underpins that is the use of a 9-tooth sprocket.

The precise 13-speed Ekar is available in three gearing variants, reflecting the different specialisms within the diverse gravel scene, and each provides the smoothest gearing progression and the optimum delivery of range. On all three options, single-tooth steps across the six smaller sprockets offer the most consistent cadence progression with smooth, efficient changes. Gradually increasing the wider spacing features on the larger half of the sprockets. This delivers a natural riding experience and helps you get the best from your performance on testing trails and rugged terrain. The three options' more widely spaced top end provide the most compact set for loaded endurance events, and the longest for full-on adventure riders. The bespoke cassette configurations are each paired with suitable – yet easily changeable – single front rings to provide maximum range, smooth steps, and ultimate efficiency – and unlike 2x systems, there is simply no wastage. Two of the three cassette options feature a 9-tooth cog. Extensive comparative tests have demonstrated that the 9-tooth is as efficient as any 10 or 11-tooth sprocket on any system, with no additional friction across its narrow-wide teeth, so you don't lose any of the wattage you produce. Each cassette is built on two blocks, split into 4- and 9-sprocket configurations for the 9-tooth, and 3- and 10-sprocket configurations for the 10-tooth range. For enhanced mechanical resistance, heat-treated carbon steel is used for the core of both blocks. It benefits from a nickel-chrome-satin surface treatment that reduces wear and friction, delivering optimal durability for gravel riding. It sits on a new freehub driver body – called N3W – that features on the lightweight carbon Campagnolo Shamal wheelset, with a wide range of compatible wheelsets to follow. N3W is highly versatile, featuring the same groove profiles as the classic Campagnolo body, but 4.4mm shorter and lighter. With appropriate lockrings and adaptors, N3W is also compatible with all current and forthcoming Campagnolo 12-, 11- and 10-speed systems, with retrofit kits including readily available. As all current Campagnolo HH12 disc brake wheelsets are N3W-compatible, you can easily update your wheels and run them with Ekar – switching wheelsets is easy and quick!

Features:

13-speed – full range to match or exceed any 2x systems, with no wastage 9-tooth sprocket – allows full range with zero drop in efficiency Compact – narrow design with quick changes, lightweight, improved chain security Durable – tough materials and design, with no weight penalty Three range options available – for every gravel specialism: 9-36; 9-42; 10-44 Closer low gear spacing – creating natural cadence progression Wider higher gear spacing – creating top-end speed options 2-piece block – blends strength of steel with light weight of alloy Works with new N3W driver body – for great versatility and full compatibility

Specifications: