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PRO Discover Carbon Gravel Handlebar
PRO Discover Carbon Gravel Handlebar
PRO Discover Carbon Gravel Handlebar
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PRO Discover Carbon Gravel Handlebar 1
PRO Discover Carbon Gravel Handlebar 3
PRO Discover Carbon Gravel Handlebar 2

PRO Discover Carbon Gravel Handlebar


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MSRP: $339.99
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Traveling Light

The PRO Discover Carbon Handlebar is a gravel bar developed to be extremely lightweight and function in conjunction with Shimano's GRX shifters and brakes. They are constructed from lightweight and robust UD carbon, feature an ergonomically designed top section and a compact drop.

The compact drops ensure ease of use for riders on rough gravel roads, allowing you to transfer from the tops or hoods to the drops without a major change in position. The Discover Carbon bars are designed to dovetail perfectly with Shimano's gravel specific GRX components and boast Shimano Di2 integration as well as full internal cable routing.


  • Gravel racing handlebars
  • UD carbon construction
  • Lightweight and robust
  • Compact design to the drops
  • Ergonomic top sections for improved comfort
  • Developed to dovetail with Shimano GRX
  • Full internal cable routing
  • Shimano Di2 integration
  • Flare: 20-degrees
  • Drop: 105mm
  • Reach: 75mm
  • Sizes: 40, 42 and 44cm widths
  • 31.8mm clamping diameter
  • Weight: From 205g

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.


Weight: 195 grams

Handlebar Clamp: 31.8 mm

Handlebar Shape: Gravel (Flared) 

40cm - 20deg Flare

Handlebar Style: Adventure Bars 

Mfg PartNum: PRHA0450 

42cm - 20deg Flare

Mfg PartNum: PRHA0451 

Handlebar Style: Adventure Bars 

44cm - 20deg Flare

Handlebar Style: Adventure Bars 

Mfg PartNum: PRHA0452 


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Reviewed 5/22/2023
by Gravel grinder
Cycling Enthusiast
Berkeley, CA
Value Rating
Overall Rating
4 of 4 customers found this review helpful.
excellent bars! very happy with these

I had Salsa Cowchipper carbon bars and they got recalled and so I got these instead. I like them much better! The bars have a great feel on the road and are compliant on the rough stuff but also stiff when you are putting down the watts. Pro is Shimano's in house brand and the bars are very high quality. They also are outstanding for wiring Di2 because the holes for the wires are near the shifters and so the wires don't travel far before disappearing inside the bar. Most Di2 compatible bars have the holes at then ends of the drops which means the wires have to be run there and you can feel the wires under your bar tape. These bars are also developed to dovetail with GRX according to Pro. The bars are very light. I got size 40 cm they only weigh 205 grams. On the tops the levers are 40 cm apart and the drops are 48 cm apart (20 degree flair), so for me that is a great. When I'm on the road, I'm fairly aero on the tops, but when descending gravel I have the stability of the drops. The best feature of all for me however is that the drop is only 105 mm. That is rare. Most bars are 115-125 mm or more. But for gravel bars it works great because it means you can get into the drops more comfortably and easily. I highly recommend them. I have no affiliation with Pro nor any other cycling brand and I don't normally leave reviews. These had zero reviews and so I thought they deserve one.

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Mechanic's Corner

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