“If it weren’t weird, it wouldn’t be Surly.” That certainly is applicable to a lot of things that Surly does, but they’re also great at making bikes that are both functional and affordable. So when it came to figuring out how to add dropbar positions to a mountain bike, Surly figured out a way to do it without having to invest in all new components.

Surly Corner bar at angle

Typically, switching to a dropbar set up on a mountain bike would involve new brake levers and probably shifters at best. Worst case, it may require an entirely new drivetrain and brake set up depending on what you want to use. Either way, it’s not a cheap swap – especially if you’re unsure of whether or not you’ll like the new position.

The new Surly Corner Bar solves that problem by offering drop bar positions, while using all of your existing MTB controls.

Surly Corner Bar dimensions and measurements

Thanks to the nubs that protrude from the drops that are the same 22.2mm diameter you’d find on other MTB bars, you’ll be able to mount your existing brake levers and shifters. The brake levers will end up pointing down, similar to the position on a drop bar, while the shift lever is then positioned to the inside of the bar where it’s still reachable with your thumb. There are a few ways you can set up the Corner Bar with Surly outlining them here.

Surly Corner bar drop bar MTB

Offered in three widths (measured at the “drop” junction at 46, 50, and 54cm), the bars have a 41.4° flare making them 63-71cm wide at the ends. Made from forged chromoly steel with a black E.D. coating, the bars have a 25.4mm clamp diameter, a 94mm drop, and a 65.2° sweep.

Surly will begin serving the Corner Bar in September, at which point it will sell for $100.

surlybikes.com

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Seraph
Seraph
11 months ago

Since there is a global parts shortage, this makes the possibility of converting your old flat bar MTB to a semi-drop bar gravel bike so much easier. I like this a lot. Hopefully Whisky/Salsa will copy them and make a carbon version for us weight weenies.

KT
KT
11 months ago
Reply to  Seraph

Exactly what I was thinking. Loving the 25.4 clamp for old school applications.

Patrick Deneen
Patrick Deneen
11 months ago
Reply to  KT

Absolutely. Already use an Answer 20/20 bar and this looks great…in carbon.

Todd Spinner
Todd Spinner
11 months ago

You have a typo. It is offered in a 46, 50 and 54cm width.

Ant'ney
Ant'ney
11 months ago

I love this way more than I should. Looing to breathe new life into an old steel 29er as a commute bike – the conversion to a drop bar and associated controls would have cost more than a new bike. This bar, I can do….

tim
tim
11 months ago

Great idea. I wish the ‘nubs’ were a little longer, 1″-2″.

Dockboy
Dockboy
11 months ago
Reply to  tim

You can get extensions from Control Tech. Maybe not inches long, but a half inch at least.

patrickcavender
patrickcavender
11 months ago

Stay weird Surly! This is a great solution to extending the viability of a bike on different terrains.

Mick
Mick
11 months ago

Great idea but too bad they are steel. Would definitely have bought these if they weren’t so heavy.

N
N
11 months ago

I’ve turned two older XC 29er hardtails into dropbar mtb/gravel bikes, and the money spent on road/gravel bike parts to make it work with the drops was the worst part. I’ll be ordering one of these for a project with my 2015 model Krampus. Having to just change the bars and grips out will be so much cheaper.

Andrew
Andrew
10 months ago

Are there any other products like this bar on the market?