Genuine Shimano parts with a full 2 year warranty. Complete with cranks, rings, preload bolt and seals in situ, ready to fit to your 24mm axle compatible BB/frame. BB not included (requires Shimano HT2 Road type BB, also works with Trek BB90).

Here for sale is a brand new and unused Shimano GRX 46/30 crankset in the shortest available length of 165mm. If you know anything about bikefit you will know that the 165mm version is the best for position, clearance, efficiency and knee/hip health and that is why it is so difficult to get now.

This is marketed as a gravel chainset and it’s ideal for that but I personally use it on my road bike as a “sub compact” since the standard 50/34 ratio compact is geared way too high for me and I didn’t use any of the highest 4 gears and really struggled up a lot of climbs in the 34t ring. 

The GRX offers way more realistic/useable gears, plus they are closer ratio and much easier to climb with thanks to the super low 30t ring, so it’s a triple win. And a quadruple win if you’re coming from a longer crank length like 172.5mm…

If you’re not racing, do yourself a favour and go sub compact and start to actually enjoy riding up hills and have nicer, closer ratios on the flat! I now have A BETTER gear range than I had on my old road triple setup with a fantastic 30 x 34T lowest gear for steep climbs.

Compatability-wise, it just slots into any existing Shimano HT2 road or gravel BB system (in my case, the BB90 system on my Trek Domane).

You MAY need to change to a GRX front mech but my 105 mech works perfectly with just an adjustment of the height position, the two limit screws and the cable anchor position/tension. Took me 5 mins. I also set up my friends 2 x 10 Ultegra 6700 with this same model GRX crank and it works perfectly with the 6700 front derailleur with just the simple adjustments mentioned above. I’ve also heard of people using this chainset with older road triple front mechs with good results.

Optimised for 2 x 11 speed systems but also works fine with 2 x 10 speed and 2 x 12 speed.

Again the crankset for sale here is brand new and complete as shown in the pics. You can’t quite see the preload bolt but it IS included. Genuine Shimano parts with a full 2 year warranty until November 2025.


Manufacturers Info:


Shimano GRX FC-RX600 Chainset - 46/30T - 165mm - 11speed - Hollowtech 2 Road 

The GRX FC-RX600 2-Piece crank from Shimano was developed for 2 x 11-speed to handle a wide variety of terrain and riding styles.

All versions feature a 2.5mm wider chain line that gives more space in the frame design and clearance for wider tyres. 

The 46-30T cranks of the RX600-11 is optimised for 2 x 11 drivetrains with more than enough range for super steep climbs and high speeds in the flat or on descents.

SHIMANO's GRX, the first Gravel-specific component family designed for both fast progress and safe bike handling on loose surfaces, is the result of an intensive and extensive research, testing and development process that incorporates information and feedback from countless riders on trails, forest tracks, gravel tracks and asphalt all over the world.

Designed to meet the demands of the ever-growing gravel and adventure bike market, Shimano's GRX range is built to be tough and versatile. The GRX RX600 11-Speed Chainset has all the features gravel and adventure riders need.
  • Super-low 46/30T chainring ratios for optimum gearing for mixed terrain and riding styles
  • SG-X chainrings have special profile to provide incredibly smooth and fast shifting
  • Lightweight Hollowtech II construction is stiff, easy to fit & remove and incredibly strong
  • Bottom bracket not included – sold separately
  • May require a GRX Front Derailleur – sold separately
  • Use: Gravel, Road, Cyclocross
  • Group:  GRX
  • Model: FC-RX600-11
  • Gradation: 46/30T
  • Q-Factor: 151mm
  • Threaded BB shell width: 68 / 70mm or use suitable HT2 24mm axle adapter to run with press fit etc
  • Gear front: 2-speed 
  • Gear rear: 11-speed
  • Construction: 2-Piece
  • Compatible Chain: HG-EV 11-speed, HG-X11
  • PCD: 110mm outer/80mm inner
  • Chain line: 46.9mm