SRAM Force AXS E1 Upgrade Kit w/Hammerhead Karoo

The SRAM Force AXS E1 Upgrade Kit with Hammerhead Karoo is a targeted cockpit overhaul for riders who already have AXS derailleurs and want to bring the rest of their setup current. One purchase replaces your shift/brake levers, hydraulic calipers, and cycling computer — and integrates all three into SRAM's wireless ecosystem without the complexity of piecing everything together separately.

The Force eTap AXS E1 levers are the centerpiece. SRAM redesigned the hood shape for this generation, widening the grip profile to accommodate more hand positions and adding textured paddles for confident control when conditions aren't clean. The carbon lever blades keep weight in check without sacrificing the stiffness you need for powerful, one-finger braking from both hoods and drops. The hydraulic system pairs with the included 2-piston flat mount calipers — stiffer than the previous generation and engineered for precise, modulated stopping across a full range of conditions.

The Bonus Buttons are worth calling out specifically. Positioned on the hoods, they give you customizable control without lifting your hands off the bars: scroll through your Hammerhead Karoo display, trigger auxiliary shifts, or map them to any compatible ANT+ function. For riders who use their computer heavily mid-ride — checking segments, managing navigation, reviewing power data — this integration removes the reach entirely.

The included Hammerhead Karoo comes in the exclusive Force Color Edition and syncs directly with SRAM's AXS ecosystem. Setup is straightforward through the AXS app, and the Karoo offers full equipment awareness — including tire pressure monitoring and drivetrain diagnostics — alongside its navigation and training features. It's one of the most capable GPS computers available, and pairing it with Force E1 levers at this price makes the kit a compelling proposition for riders ready to modernize their build.

Specs at a Glance

• Kit includes: Force eTap AXS E1 left/right HRD shift/brake levers, 2-piston flat mount calipers (pair), Hammerhead Karoo Force Color Edition GPS computer
• Lever construction: Carbon
• Braking: Hydraulic disc, one-finger actuation from hoods and drops
• Caliper mount: Flat mount, 2-piston, 20mm offset
• Rotors: Not included
• Bonus Buttons: Customizable hood controls — head unit scroll, auxiliary shifts, ANT+ device management
• Compatibility: SRAM eTap AXS front and rear derailleurs, 12- or 13-speed, 1x or 2x
• Freehub standard: SRAM XDR
• SKU: 00.7918.383.000

Design Benefits

1. Fully wireless integration — Force E1 levers communicate with existing AXS derailleurs over SRAM's proven wireless protocol, with no cables to route or manage
2. Bonus Button connectivity — Scroll the Karoo or trigger auxiliary inputs directly from the hoods, keeping hands in position at all times
3. Revised E1 ergonomics — Wider hood profile and textured paddles improve grip across a broader range of hand sizes and riding conditions
4. Stiffer hydraulic calipers — Updated flat mount design delivers more consistent braking feel with less lever travel
5. Hammerhead Karoo Force Color Edition — AXS-native GPS computer with equipment awareness, tire pressure monitoring, and full navigation and training capability