SHIMANO FC-RX600 GRX chainset 46/30, double, 11-speed, 2 piece design

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However, all these chainsets are designed to work only with SRAM's 12-speed system. In terms of the gearing they provide and how you'd use them, they pretty much map against the double chainsets we've discussed. If you're used to 53/39 you'd choose a SRAM 50/37. Happy with 52/36? Go for SRAM 48/35. The SRAM 46/33 gives a roughly equivalent set of gears to a compact chainset while the 43/30 is SRAM's answer to sub-compacts. First, different cranksets may have a different number of arms or direct-mount interfaces (connecting the cranks to the chainrings), and they may be positioned differently.

combination is minimally faster than 52x12T. This is 49.7km/h (30.9mph) and is faster than 53x13T! At 100rpm it increases to 55km/h (34.3mph). That said, a triple can be a good idea, especially for something like a touring bike where you need those very small gears to climb while carrying a heavy load. What’s more, the move to 12-speed gearing means the standard double crankset is no longer standard on the latest WorldTour bikes featuring SRAM or Shimano groupsets. If you want a lower climbing gear, or tighter gear jumps, one of the several subcompact cranksets on the market could be a great option for you. Many riders will get undeniable climbing benefits with minimal disadvantages changing from a 50/34 to a 46/30. Groupset brands also recommend a maximum difference in the number of chainring teeth that a front derailleur can deal with, so you can’t usually increase the jump between rings.

Praxis Works make a 48/32 sub compact chainring set on a 110bcd, which means you don't need to buy a specific sub compact chainset. The inner mounts on the outer, as it's the BCD that dictates the smallest size inner chainring possible. Single-ring systems, known as 1x drivetrains, are becoming increasingly popular on gravel bikes and can be found fitted to road bikes, too. Many 1x cranksets use narrow-wide chainrings for better chain retention. Fitted to my gravel bike, the FSA Energy chainset has provided very useful low gears (especially in conjunction with an 11-40 cassette) with no loss in shift quality or other performance. First impressions A mismatched pair of rings might make for particularly awkward shifts from the small to the large ring and there’s an increased risk of the chain falling off the rings altogether, whether you’re shifting up or down. Choose from the latest road bike cranksets and MTB cranksets from the world's biggest component brands, with a choice spanning entry level to pro.

That’s changed with newer Shimano road cranksets, which have settled on 110mm BCD for all chainring sizes, giving you the option to increase or decrease your chainring sizes without having to change the cranks as well. Swapping from a double to a triple, or the reverse, is quite an expensive process because you need to change other groupset components too. cranksets are also a popular option for gravel bikes, because eliminating the front derailleur makes for a simpler mechanical setup and the bigger jumps between gears are less of a problem for gravel riding. 36t, 38t, 40t or 42t single chainrings are all commonly available. A ‘standard’ double crankset has rings with 53 and 39 teeth. Although it’s called standard, it’s not a very common configuration to see these days and is mainly the preserve of racers, because the fashion now is for smaller chainrings, giving lower gear ratios.

SRAM SX Eagle DUB Chainset

But you don’t have to have a single-ring mountain bike gear setup and you can get a number of 2x setups across the ranges. Some 11-speed Shimano groupsets are still available too.

The latest crop of gravel specific road drivetrains offer lower gearing than a typical road bike. Groups like Shimano GRX, SRAM Force AXS Wide and Campagnolo Ekar are designed to help you deal with steep dirt roads with loose surfaces as best as possible through wide range gearing. In the case of 2x gravel groups, the new “sub-compact” cranksets have smaller chainrings than the common 50/34 compact rings many road bike come with. New gravel friendly road cranksets include the 46/30 Rotor, 46/30 FSA Adventure, 48/32 Praxis Zayante, the 46/30 Shimano GRX RX FC600 and the 48/31 Shimano GRX FC-RX810. How do you know if this lower gearing is for you? A Brief History of the Compact Crankset Most road bikes come with a double chainset, meaning that you have two chainrings. The larger chainring gives you bigger, harder to turn gears that move you further per pedal revolution – so it's suitable for higher speeds – while the smaller chainring gives you gears that are easier to turn but move you a shorter distance per pedal revolution – so it's suitable for lower speeds, including riding uphill. In practice, we’re only talking about a few millimetres difference between ‘long’ and ‘short’ cranks – most riders will barely notice the difference in normal riding, from one size to the next. Crankset compatibility Many of Shimano’s road cranksets have four arms, but they’re not distributed evenly around the spindle.SRAM’s crankset BCDs vary between setups, though. A 12-speed SRAM Force eTap AXS or SRAM Rival eTap AXS two-ring crankset and single-ring crankset both have a 107mm BCD, but a SRAM Force Wide double has a 94mm BCD.

John has been writing about bikes and cycling for over 30 years since discovering that people were mug enough to pay him for it rather than expecting him to do an honest day's work. SRAM Yaw front derailleur compatibility – Due to the construction of SRAM Yaw front derailleurs, our Sub Compact chainrings are not compatible with them. If you replace your Yaw front derailleur with a Shimano equivalent (there are no indexing issues between Shimano FD and SRAM shift levers) you will be able to use our Sub Compact chainrings. Swapping chainring sizes on a double or triple crankset isn’t as simple as it sounds, because specific chainrings are designed to work together, with tooth positioning and ramps on the rings there to help the chain shift smoothly. I've since always thought that a CX double (46/36 or 46/34) would be a better fit for most recreational riders. I now have a 50/34 compact and don't like this aspect. For anyone doing any offroad or very steep climbs then sub-compact is the way to go. Fitting is extremely easy, with only an 8mm hex key required, though a torque wrench is a very good idea (the rating of 45-47Nm is handily etched onto the left arm) to accurately eliminate play. Removal is just as simple, as the self-extracting bolt pulls the crank off the splines as you undo it. It takes a fair bit of force in both directions, so invest in a long key.

Shimano M6120 Deore Boost Single 12 Speed Chainset

You can’t easily swap the number of chainrings your bike is set up for, because the front derailleur and associated shifter will be specific for your setup and would need to be replaced, too. Optimized to each size separately. 30T- 9% ; 32T - 8% ; 46/48T - 10-11.2% ; Timing of 108 -110.5° after TDC (top dead center) - Ideal for climbing. Patent Pending