The products mentioned in this article are selected or reviewed independently by our journalists. When you buy through links on our site we may earn an affiliate commission, but this never influences our opinion.

This kit converts SRAM shifters to work with 13-speed Campagnolo Ekar components

New Ratio Technology 1x13C kit and Ratio Ring opens up options for picky gravelistas

2021 Fairlight Strael 3.0 review

This new conversion kit from Ratio Technology modifies SRAM 10- or 11-speed mechanical groupsets to work with 13-speed Campagnolo Ekar gravel groupset cassettes and chains.

Advertisement

The 1x13C kit is comprised of a new ratchet and a pair of 12-tooth, 13-speed specific jockey wheels.

A 13-speed-compatible 110mm 5-bolt chainring is also available from the brand. Ratio claims its Ratio Ring is the first aftermarket Ekar-compatible chainring on the market.

The kit is priced at £99.50 / €96.97 / $104.22 / AU$144.21 and is available now.

The Ratio Ring is available in 34t, 36t and 38t options, and costs £75 / €73.04 / $78.49 / AU$108.66

This launch follows the release of a kit to convert 11-speed mechanical SRAM groupset components to work with 12-speed cassettes.

Why SRAMpagnolo?

The kit allows riders to use 13-speed Campagnolo cassettes with SRAM drivetrain components.
Ratio Technology

Why exactly would one wish to convert SRAM shifters and derailleurs to work with 13-speed Campagnolo Ekar components?

Ratio Technology says it “believes the range and spacing of 1×13 hit a sweet spot for general gravel riding”, but adds “there are limitations to Ekar”.

Ratio Technology highlights the “restrictive 38-tooth minimum chainring size, proprietary crankset and bottom bracket, lack of a power meter, and limited crank length options” as what it views as the primary drawbacks of the groupset.

The brand claims its Ratio Ring – which is based around the commonplace 5-bolt 110 BCD pattern – gets around some of these issues, opening up options to use a wide number of other cranksets.

As with its other conversion kits, the Ratio Technology 1x13C kit enables riders to upgrade existing parts or piece together a groupset that is compatible with modern wide-range cassettes for a lower price than a whole new groupset.

What do I need to make the kit work?

The ratchet and jockey wheels are both specific to 13-speed components.
Ratio Technology

The Ratio Technology 1x13C kit will work with any mechanical 11-speed SRAM road bike shifters. 10-speed SRAM shifters can also be converted if a separate cable spool is purchased alongside the kit.

The kit is compatible with 1x SRAM rear derailleurs from the Force 1, Rival 1 or Apex 1 family.

It will also work with 11-speed SRAM mountain bike rear derailleurs, but a separate cable fin needs to be purchased to make this combination work.

The Ratio Ring will work with any 5-bolt 110mm BCD crankset.
Ratio Technology
Advertisement

You will then have to supply your own Campagnolo Ekar cassette and chain, a 13-speed compatible chainring and compatible cranks.