The Giant Reign E+ 2 in Black Diamond is an enduro-ready powerhouse that trades subtle aesthetics for raw, gravity-defying capability. As Giant’s premier long-travel e-MTB, it utilizes a "mullet" wheel configuration—a 29-inch front for monster-trucking over obstacles and a 27.5-inch rear to keep the back end snappy in tight switchbacks. The frame is crafted from Giant’s proprietary ALUXX SL aluminium, paired with the legendary Maestro suspension system. This setup delivers 160mm of rear travel that stays active even under heavy braking, ensuring that the "Black Diamond" colourway isn't just a name, but an invitation to the most technical trails on the map.
Powering this beast is the SyncDrive Pro motor, co-developed with Yamaha, which delivers a meaty 85Nm of torque. Unlike some systems that feel like an "on/off" switch, Giant’s Smart Assist technology uses six sensors to provide a natural, fluid power delivery that mimics your own pedalling input—just with 400% more muscle. The cockpit is refreshingly minimalist, featuring the RideControl GO button integrated directly into the top tube for power and mode switching, while the RideControl Ergo 3 remote hides discreetly on the bars. It’s a bike designed for the "no-shuttle" lifestyle, giving you the battery and motor efficiency to turn a two-hour ride into a full-day epic.
E-System (Giant/Yamaha)
Motor: Giant SyncDrive Pro, 85Nm, powered by Yamaha.
Battery: EnergyPak Smart 625Wh, Integrated Lithium-Ion (Range Extender compatible).
Controller: RideControl Ergo 3, Grip integrated buttons.
Display: RideControl GO, Frame-integrated LED display.
Charger: Giant Smart Charger, 6A (Fast charging).
Frameset & Suspension
Frame: ALUXX SL-grade Aluminum, 160mm Maestro suspension, Flip-Chip adjustable geometry, UDH compatible.
Fork: RockShox ZEB Select 29er, 170mm travel, Charger RC damper, 15x110mm Maxle Stealth.
Shock: Fox Float DPX2 Performance, EVOL Large Volume sleeve, 3-position lever, 205x62.5mm Trunnion mount.
Seatpost: Giant Contact Switch dropper, remote lever, 30.9mm (Travel: 170mm for XL).
Color: Black Diamond / Black.
Drivetrain & Brakes
Rear Derailleur: SRAM GX Eagle, 12-Speed.
Shifters: SRAM NX Eagle Single Click (E-bike specific).
Brake System: SRAM Code R, Hydraulic Disc, 4-Piston.
Rotors: 220mm (Front) / 200mm (Rear).
Crankset: Praxis e-Cadet+ forged crankarms, SRAM X-Sync Eagle 36T.
Cassette: SRAM PG-1230, 11-50T, 12-Speed.
Chain: SRAM NX Eagle.
Wheels & Tires
Wheelset: Giant AM Tubeless Ready, 30mm inner width (29" Front / 27.5" Rear).
Hubs: Giant eTracker, Sealed Cartridge Bearings, Boost spacing.
Front Tire: Maxxis Minion DHF, 29x2.6", Foldable, Tubeless, EXO+, 3C MaxxTerra.
Rear Tire: Maxxis High Roller II, 27.5x2.5", Foldable, Tubeless, DoubleDown, 3C MaxxTerra.
Key Highlights
Mullet Agility: The 27.5" rear wheel allows for shorter chainstays, making this one of the most maneuverable long-travel e-bikes Giant has ever produced.
Maestro 1.5: The suspension curve is specifically tuned for the extra weight of an e-bike, providing a plush mid-stroke and excellent bottom-out resistance.
Flip-Chip Geometry: Allows you to switch between "High" and "Low" positions, changing the head tube angle and bottom bracket height to suit either steep alpine climbs or aggressive bike park descents.
85Nm SyncDrive Pro: Famous for its "instant" engagement—the motor provides support the millisecond you touch the pedals, which is a lifesaver when starting on a steep, technical incline.