Reign Advanced E+
For 2026, Giant introduces the Reign Advanced E+ as a clean-sheet, flagship enduro e-MTB designed for high-speed descending and aggressive bike-park use. Moving to a full carbon chassis, the platform bumps travel to 170mm in the rear and 180mm up front, utilizing a modified Maestro suspension layout that integrates the lower link cleanly around the motor. It rolls exclusively on a mixed-wheel setup.
The defining shift for this generation is the adoption of a 48-volt electrical architecture paired with the new SyncDrive Pro 3 motor, delivering 90Nm of torque and up to 800 watts of peak power. Rather than maximizing internal battery size, Giant opted for a 560Wh main battery to prioritize handling and frame stiffness, offering a 280Wh range extender for riders who need more capacity. Heavy-duty frame protection, including a titanium skid plate, underscores the bike's intent as a durable, gravity-focused machine.
| Stack | 669mm |
| Reach | 476mm |
| Top tube | 625mm |
| Headtube length | 120mm |
| Seat tube length | 450mm |
Fit and geometry
The Reign Advanced E+ geometry is defined by a notably high front end, with the size large reaching a 667mm stack height. This tall setup places the rider in an upright, commanding posture that reduces fatigue on steep, sustained descents. Paired with a slack 63.5-degree head tube angle and consistent 450mm chainstays across all four frame sizes, the chassis centers the rider between the mixed wheels to maximize stability at speed.
Giant builds a significant amount of adjustability into the frame to help riders fine-tune this aggressive baseline. A three-position flip chip in the upper rocker link alters the head and seat tube angles by 0.4 degrees while raising or lowering the bottom bracket. Additionally, a modular headset cup system allows for 5mm of reach adjustment in either direction. This lets riders shorten the front center for quicker steering on tight trails or lengthen it for maximum composure in the bike park. While the geometry excels downhill, the high stack and slack angles mean riders must actively weight the front wheel to maintain steering precision on steep, technical climbs.
Builds
The Reign Advanced E+ lineup spans three models, all sharing the same Advanced-grade carbon frame, 560Wh battery, and 48V SyncDrive Pro 3 motor. Every build also includes Giant’s Aegis tire pressure monitoring sensors and the integrated top-tube display.
The entry-level 2 build starts at $7,500, pairing a RockShox ZEB Select fork with a Fox Float X Performance shock. It relies on a Shimano Deore 12-speed drivetrain and SLX four-piston brakes, rolling on Giant AM30 aluminum wheels. Stepping up to the 1 build at $8,800 upgrades the suspension to a Fox 38 Performance Elite fork with the GRIP X2 damper. This mid-tier model shifts to a SRAM GX Eagle Transmission, TRP DH-R EVO brakes, and e-bike optimized Giant e-TRA aluminum wheels, representing the sweet spot for aggressive riders seeking high-end damping and electronic shifting.
The flagship 0 build jumps to $13,500. It features Fox Factory suspension, a SRAM XX/X0 Eagle Transmission, and SRAM Maven Ultimate brakes. It also upgrades to Giant TRX carbon wheels, a one-piece carbon handlebar, and crucially, includes the 280Wh range extender in the box—an accessory that must be purchased separately on the lower builds. All models are equipped with heavy-duty Maxxis MaxxGrip tires and massive brake rotors to manage the bike's weight.
Reviews
Reviewers characterize the Reign Advanced E+ as a highly capable, gravity-oriented machine that prioritizes high-speed stability over low-speed agility. On rough descents, the 180/170mm travel platform acts as a "steamroller" that "flattens everything out" (Ebike-mtb) through rock gardens and root sections. While testers agree the bike excels at muting trail chatter, they note a tradeoff on smoother flow trails, where the deep suspension can absorb rider inputs and make it harder to pump for momentum.
The new 48V SyncDrive Pro 3 motor receives praise for its smooth, responsive power delivery, particularly at higher cadences. Testers found it packs "plenty of punch" (Flow Mountain Bike) on steep inclines, though some noted a "slight rattle" (Flow Mountain Bike) from the motor while descending. Climbing efficiency is a standout trait, with the Maestro linkage remaining remarkably pedal-neutral.
Reviewers also highlight the bike's robust construction and thoughtful integration. The elastomer-damped active bashguard is viewed as a "winning proposition" (Cyclonline) for long-term motor protection. Ultimately, the consensus points to a bike optimized for aggressive enduro riders who value downhill composure and structural durability over marathon range or playful trail manners.
