Bontrager Pro IsoCore VR-SF Drop Handlebar

Rougher roads. Longer rides. Less fatigue. The Bontrager Pro IsoCore VR-SF Drop Handlebar is engineered for riders who refuse to let bad roads slow them down. Built from OCLV Carbon — Trek and Bontrager's patented, high-performance carbon layup process — and infused with IsoCore continuous inner-laminar technology, this bar reduces road vibration by 20% compared to traditional carbon bars, turning rough tarmac and gravel chatter into a smooth, controlled ride.

IsoCore works in tandem with the included replaceable IsoZone EVA foam pads, which sit flush in precisely designed recesses on the tops and in the drops. These pads absorb an additional layer of road vibration while maintaining the original grip diameter — so your bar tape, levers, and hand position feel completely natural, with none of the bulk of traditional padding solutions.

The VR-SF (Variable Radius Shallow Flare) bend geometry is the ideal shape for all-day road and gravel riding. A shorter 75mm reach keeps brake and shift levers easily within reach from the drops, while the 128mm drop and gentle 4° flare open up your hands for natural wrist alignment and effortless transitions between hand positions. The result is a bar that's comfortable on the hoods for hours, and just as confidence-inspiring when you drop into the drops for a sprint or a technical descent.

Di2 compatible ports allow clean internal wire routing with the Shimano EW-RS910 bar end junction box (sold separately), and the bar is fully compatible with clip-on aero bar extensions. Available in 380mm, 400mm, 420mm, and 440mm widths.

Key Features:
- OCLV Carbon construction with IsoCore continuous inner-laminar technology
- 20% less road vibration than traditional carbon bars
- Includes two replaceable IsoZone EVA top-of-bar pads
- VR-SF bend: 75mm reach / 128mm drop / 4° flare
- Di2 compatible internal cable routing ports
- Compatible with Shimano EW-RS910 bar end Junction-A
- Compatible with clip-on aero bars
- 31.8mm clamp diameter
- Available widths: 380mm, 400mm, 420mm, 440mm
- Weight: approx. 240–255g (size dependent)
- Colour: Black