Zipp Service Course SL-70 XPLR

All-Road Ergonomics. Purpose-Built Gravel Flare.

The engineering hallmark of the Zipp Service Course SL-70 XPLR is its compound drop geometry featuring a 5° drop flare paired with an 11° out-sweep. Unlike radical flared bars that twist your brake hoods at extreme, wrist-straining angles, the XPLR design keeps your brake and shift levers virtually vertical and natural in the hoods. The flare originates below the hood clamp zone, expanding the drops by approximately 6cm wider than the top position to give you immense leverage, wrist clearance, and front-wheel stability when tackling loose gravel descents and rutted singletrack.

Why the Zipp Service Course SL-70 XPLR Belongs on Your Build:

• Compound Flare Architecture: 5° flare and 11° outsweep create a stance 6cm wider at the drops than the hoods, delivering high leverage without compromising standard hood ergonomics.

• Compact Reach & Shallow Drop: 70mm reach and 115mm drop allow quick transitions between the tops, hoods, and drops without overextending your reach on long endurance rides.

• Ultralight 7050 Aluminum: Precision-butted 7050 series alloy dampens harsh washboard vibration while maintaining unyielding torsional stiffness under full-gas sprint efforts.

• Ergonomic Flattened Top Section: Features an ovalized top profile that distributes palm pressure comfortably across hours of seated climbing.

• Generous Clamp Width: Sizable 31.8mm clamping area leaves ample room for clip-on aero bars, GPS mounts, lights, and handlebar bags.

• Di2 & Internal Routing Ready: Compatible with Shimano Di2 bar-end junction boxes (EW-RS910) for clean electronic wire management.

Technical Specifications:

• Discipline: Gravel / All-Road / Bikepacking / Cyclocross

• Material: 7050 High-Strength Aluminum

• Clamp Diameter: 31.8mm

• Reach: 70mm

• Drop: 115mm

• Drop Flare: 5°

• Outsweep: 11°

• Top Backsweep: 3°

• Weight: 260g (42cm width)

The Alegro Perspective: Gravel handlebars have seen plenty of wild experiments, with some flares pushing out so far you can barely reach the brake levers from the hoods. Zipp completely nailed the sweet spot with the SL-70 XPLR. Keeping the hoods upright preserves your natural wrist alignment and road-bike ergonomics for 80% of your ride, while the sudden flare below the hoods gives you massive stability the second you drop down to hammer a chunky gravel descent. It’s light, bombproof, and handles rough terrain without feeling like you're steering a truck.

Balanced Gravel Geometry. Unyielding 7050 Alloy. Expand Your Horizons with Zipp.