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GRX Lever Differences 800 vs 600

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GRX Lever Differences 800 vs 600

Old 01-31-20, 10:14 AM
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evan the cdn
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GRX Lever Differences 800 vs 600

Does anyone have a handle on the differences between the 800 and the 600 GRX levers? (ST-RX810-R vs ST-RX600-R). I see the 800 has the "Servo Wave" feature and weighs 21 grams less. Do both of them have the higher pivot point I've seen mentioned in reviews? Are there any other differences I should consider?

Also, have you been able to compare the feel with the higher pivot point to other levers like the 105 hydro's? Was there a significant difference?
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Old 01-31-20, 12:07 PM
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Originally Posted by evan the cdn View Post
Does anyone have a handle on the differences between the 800 and the 600 GRX levers? (ST-RX810-R vs ST-RX600-R). I see the 800 has the "Servo Wave" feature and weighs 21 grams less. Do both of them have the higher pivot point I've seen mentioned in reviews? Are there any other differences I should consider?

Also, have you been able to compare the feel with the higher pivot point to other levers like the 105 hydro's? Was there a significant difference?
From what I understand, the higher pivot point applies only to Di2, and not cable brifters
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Old 01-31-20, 12:21 PM
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evan the cdn
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Originally Posted by DorkDisk View Post
From what I understand, the higher pivot point applies only to Di2, and not cable brifters
Oh, that makes sense. Thanks for responding.
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Old 02-01-20, 04:25 AM
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The Servo wave only applies to the Di2 also from what I have read.
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Old 02-01-20, 01:15 PM
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evan the cdn
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Originally Posted by srode1 View Post
The Servo wave only applies to the Di2 also from what I have read.
I think the non-Di2 at the 800 level has Servo Wave.
https://bike.shimano.com/en-EU/product/component/grx-11-speed/ST-RX810-R.html
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Old 02-01-20, 03:12 PM
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Originally Posted by evan the cdn View Post
I think the non-Di2 at the 800 level has Servo Wave.
https://bike.shimano.com/en-EU/product/component/grx-11-speed/ST-RX810-R.html
Shimano probably knows, this is one place that says its the Di2 version that gets it https://www.bikeexchange.com/blog/sh...things-to-know
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Old 02-01-20, 07:14 PM
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Originally Posted by srode1 View Post
Shimano probably knows, this is one place that says its the Di2 version that gets it...
Interesting. They make it sound like all of the points made in "4, Refined Levers" apply to all GRX lever options. I don't think that's accurate.

4. Refined Levers

An evolution of the brand’s ergonomic and highly regarded road STI levers, GRX scores a host of updates in the lever department when compared to its road-going siblings. The brake lever pivot point has been raised to increase brake leverage from the hoods; a scalloped finger rest has been added while the lever blades now feature a matte textured finish for improved grip.

The increased pivot point of the brakes gives a noticeably taller aesthetic and is said to provide more control when braking while descending on rough terrain.
It would be great if Shimano would publish a spec chart with the models listed across the top and the features listed down the side. Check box for yes!
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Old 02-03-20, 08:10 AM
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GRX 800 and 600 are suposed to have the same shape and features, the difference would be in the build quality / materials which ends up making the 800 version a bit lighter. Just like Ultegra R8000 and 105 R7000.
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Old 02-03-20, 08:25 AM
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Originally Posted by MAGAIVER View Post
GRX 800 and 600 are suposed to have the same shape and features, the difference would be in the build quality / materials which ends up making the 800 version a bit lighter. Just like Ultegra R8000 and 105 R7000.
The Di2 815's don't have the same shape as the rest of them. That's what makes me think DorkDisk is right and the higher pivot point only applies to Di2. Also, Shimano's specs say that the Servo Wave feature only applies to the 800 level and not the 600, so even the levers that have the same shape have different features.
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Old 02-04-20, 10:04 AM
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Servo wave is different from the altered lever pivot. It means the brake lever pushes a variable amount of fluid through different parts of the stroke, so thereís greater pad clearance without compromising leverage. The road levers have it.

Only the Di2 levers have the higher pivot point. Look at the axle on the mechanical levers (you can see it from the outside): itís the same as where it is on the road levers.
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