Comments on: Actual Weights for Shimano GRX RX820 1 x 12 Speed Drivetrain https://bikerumor.com/actual-weights-shimano-grx-rx820-1-x-12-speed-drivetrain/ All the best cycling news, tech, rumors and reviews Sun, 03 Sep 2023 18:34:05 +0000 hourly 1 https://wordpress.org/?v=6.2.2 By: Grillis https://bikerumor.com/actual-weights-shimano-grx-rx820-1-x-12-speed-drivetrain/#comment-3518593 Sun, 03 Sep 2023 18:34:05 +0000 https://bikerumor.com/?p=337778#comment-3518593 In reply to carbonnation.

12spd GRX will work with 12spd 105, but there is no mtb group cross compatibility (different pull ratios). Source: Escape Collective grx review.

]]> By: carbonnation https://bikerumor.com/actual-weights-shimano-grx-rx820-1-x-12-speed-drivetrain/#comment-3518578 Sat, 02 Sep 2023 20:06:24 +0000 https://bikerumor.com/?p=337778#comment-3518578 Zach–any word on compatibility–which I know is a word Shimano refuses to learn. Will Shimano rear derailers work with the new 12-speed shifters?

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