Santa Cruz is back with a revamped Bullit, and this fourth-gen bruiser isn’t just another eMTB, it’s the closest thing to a downhill rig you’ll find with a motor, minus a dual-crown fork. Packing serious travel, redesigned geometry, and Bosch’s most powerful drive system yet, the 2025 Santa Cruz Bullit is built for riders who want to charge harder and farther, with no compromises.
Features of the 2025 Santa Cruz Bullit
170mm Travel Front & Rear
It’s designed to crush the steepest descents and keep you composed while doing it.
Bosch Performance Line CX Motor + 600Wh Battery
Former generations of the Santa Cruz Bullit featured the Shimano EP-801 motor, but this time round, Santa Cruz have chosen to spec the new Bosch Performance Line CX motor. The full-powered drive unit sports 85Nm torque, 600W peak power, and quiet operation. An optional 250Wh PowerMore range extender boosts endurance for all-day missions.
MX Wheels (29” front / 27.5” rear)
Perfectly tailored for e-bikes, mullet or ‘MX’ wheelsets are stable up front, agile out back, improving handling and rider positioning, especially for heavier setups.
New Chassis, Same Santa Cruz Strength
Available in both C and CC carbon (X0 AXS model only), the Santa Cruz Bullit 4 weighs in under 23kg across all builds and five sizes (SM–XXL). An enclosed downtube increases frame robustness and minimizes rattle.
Independent Flip Chips
Adjust geometry (Hi/Lo BB height and HT angle) and suspension progression (26–29%) separately – ideal for tuning feel based on terrain or rider preference.
Modern Geometry + Sizing
With the steepest seat tube angle and slackest head angle Santa Cruz has ever put on an e-bike (63.3°/63.6° HTA), it’s their most aggressive yet balanced handling package. Bonus: this is the first Santa Cruz Bullit available in Small sizing.
Builds & Spec Levels
Four trim levels (Bullit 70, 90, GX AXS, and X0 AXS RSV) feature Fox and RockShox suspension, SRAM T-Type drivetrains, and robust Maxxis DD tires. Highlights include:
- Fox Float X2 Factory shock and Fox 38 Grip X2 fork on top-tier builds with Fox Float X and Fox 38 variants adorning the remainder of the range (aside from Eagle 70 model, featuring Rockshox Zeb)
- SRAM AXS T-Type wireless drivetrains on GX AXS and X0 AXS RSV, with Eagle 90 and 70 featuring SRAM’s newly released mechanical drivetrains, specced with e-friendly 155mm cranks.
- Reserve HD alloy/carbon wheels, DH-rated in the rear
- Maxxis Assegai/Minion tyres with doubledown casing
Other Santa Cruz Bullit Details
- Tool mount under toptube
- Longer dropper posts (180mm–210mm) thanks to redesigned seat tube
- No proprietary tools needed – 5mm hex across key bolts
- Oversized bearings, replaceable threads and one piece bridged linkage to increase chassis stiffness
Why It Matters
Santa Cruz didn’t just adapt their proven platform, they fully reengineered the Bullit. While many brands compromise suspension kinematics to accommodate motors, the Bullit 4 takes a clean-slate approach with a new four-bar layout replacing Santa Cruz’s iconic VPP, optimising both suspension behaviour and power delivery.
The Bottom Line
The 2025 Santa Cruz Bullit 4 blends DH-level capability with Bosch-powered reliability, wrapped in a battle-hardened carbon package at an impressive claimed weight. For riders demanding a full-send bike that’s easy to live with and hard to beat, something that allows a self shuttle to the top of the downhill track, this might be the new gold standard in gravity-focused e-bikes.
The new Bullits are landing in Australia this June, with the 70 and 90 models arriving first, followed by the rest of the range shortly after.
