Overview
The 2026 Giant Reign Advanced E+ is Giant’s top-tier enduro eMTB, pairing the SyncDrive Pro 3 motor (90Nm) with 170mm of Maestro suspension travel and a mullet wheel setup (29″ front / 27.5″ rear). The Advanced-grade composite frame keeps weight reasonable for a full-power eMTB, while the three-position flip chip allows riders to fine-tune geometry from a relaxed 63.1° head angle to a steeper 63.9° depending on terrain.
New to bike geometry? Our complete guide to mountain bike geometry explains every measurement and what it means for your riding. You can also learn how to read a geometry chart to compare this bike against other models.
Available in four sizes (S through XL), the Reign Advanced E+ features a 560Wh integrated battery with an optional 280Wh range extender. Builds range from the Reign Advanced E+ 2 starting around $7,500 to the top-spec E+ 0 at $13,500. The mullet wheel configuration pairs the stability of a 29″ front wheel with the agility and acceleration of a 27.5″ rear, making it particularly effective on steep, technical terrain.
Geometry Diagram
Geometry Table
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat Tube Length | 400mm | 425mm | 450mm | 475mm |
| Seat Tube Angle (Low/Mid/High) | 77.1° / 77.5° / 77.9° | 77.1° / 77.5° / 77.9° | 77.1° / 77.5° / 77.9° | 77.1° / 77.5° / 77.9° |
| Top Tube Length (Mid) | 569mm | 601mm | 624mm | 656mm |
| Head Tube Length | 95mm | 105mm | 120mm | 135mm |
| Head Tube Angle (Low/Mid/High) | 63.1° / 63.5° / 63.9° | 63.1° / 63.5° / 63.9° | 63.1° / 63.5° / 63.9° | 63.1° / 63.5° / 63.9° |
| Fork Rake | 44mm | 44mm | 44mm | 44mm |
| Trail (Low/Mid/High) | 132mm / 130mm / 127mm | 132mm / 130mm / 127mm | 132mm / 130mm / 127mm | 132mm / 130mm / 127mm |
| Wheelbase (Mid) | 1227mm | 1260mm | 1287mm | 1322mm |
| Chainstay Length (Mid) | 450mm | 450mm | 450mm | 450mm |
| BB Drop (Low/Mid) | 10mm / 5mm | 10mm / 5mm | 10mm / 5mm | 10mm / 5mm |
| Stack (Mid) | 646mm | 654mm | 667mm | 680mm |
| Reach (Mid) | 430mm | 460mm | 480mm | 510mm |
| Standover | 762mm | 770mm | 783mm | 795mm |
| Handlebar Width | 800mm | 800mm | 800mm | 800mm |
| Stem Length | 40mm | 40mm | 40mm | 40mm |
| Crank Length | 160mm | 160mm | 160mm | 160mm |
| Wheel Size | R27.5″ / F29″ | R27.5″ / F29″ | R27.5″ / F29″ | R27.5″ / F29″ |
Geometry Analysis
The Reign E+’s geometry is thoroughly aggressive, with the three-position flip chip offering impressive range. In the mid setting — the best all-rounder — the 63.5° head angle is among the slackest in the eMTB class, paired with a steep 77.5° seat tube angle that keeps you centered for efficient motor-assisted climbing. Reach figures span from 430mm (S) to 510mm (XL), keeping the bike roomy without being unwieldy. The 450mm chainstays are typical for an eMTB with a motor in the bottom bracket area, though longer than analog enduro bikes. The mullet setup inherently lowers the bottom bracket, contributing to the low 5mm BB drop in mid position — this keeps the center of gravity planted through corners. Wheelbase numbers are long (1260mm on the M), providing high-speed stability that matches the bike’s aggressive intentions.
Ride Characteristics
On the trail, the Reign E+ is a gravity-biased machine that uses motor power to access terrain normally reserved for shuttle runs. The SyncDrive Pro 3 motor delivers 90Nm of torque smoothly, powering you up steep fire roads and technical climbs with ease. The 170mm Maestro suspension soaks up everything from rooty singletrack to rock gardens and drops, with excellent mid-stroke support and a progressive ramp-up to bottom-out. The mullet wheel setup shines on steep, tight terrain — the smaller rear wheel allows the bike to rotate quickly through switchbacks while the 29″ front wheel rolls over obstacles with ease. Descending, the slack geometry and long wheelbase inspire confidence at speed, and the extra weight of the motor/battery actually helps plant the bike through rough sections. The three-position flip chip is a genuine tuning tool: run it low for bike park days, mid for general trail riding, and high for mellower terrain.
Key Specs
Frame: Advanced-grade composite, Maestro suspension, 170mm travel. Motor: Giant SyncDrive Pro 3, 90Nm, PedalPlus 6-sensor. Battery: 560Wh integrated + optional 280Wh range extender. Wheel Size: 29″ front / 27.5″ rear (mullet). Fork: FOX 38 Float Performance Elite or RockShox ZEB, 180mm. Shock: FOX Float X Performance Elite or RockShox Super Deluxe. Sizes: S, M, L, XL. Drivetrain: SRAM GX/X0 Eagle Transmission. Brakes: SRAM Code RSC or Shimano Deore XT 4-piston, 220/200mm rotors.
What’s New vs Previous Generation
The 2026 Reign Advanced E+ features the new SyncDrive Pro 3 motor — Giant’s latest generation powertrain delivering 90Nm of torque with improved smoothness and natural feel compared to the previous generation. The frame geometry carries over from 2025 with the three-position flip chip system. Key updates include the integration of Giant’s RideControl GO Lux display, Aegis tire pressure monitoring compatibility, and updated suspension tunes. The 560Wh battery with range extender option remains, providing flexibility for long rides.
Who Should Consider This Bike
The Reign Advanced E+ is built for riders who want maximum descending capability from their eMTB. If you ride steep, aggressive terrain — think enduro-style trails, bike parks, or backcountry shuttles — and want motor assistance to make those climbs effortless, this is your bike. The mullet wheel setup particularly suits riders who value agility and maneuverability on tight, technical descents. Riders who prioritize a more natural riding feel and lighter weight should consider Giant’s Trance X E+ line, which offers less travel in a more trail-oriented package.
Comparable Models
The Reign Advanced E+ competes with the Specialized Turbo Levo (more trail-oriented with 29″ wheels), Trek Rail (similar travel, 29″ wheels), Santa Cruz Heckler (Shimano EP8 motor), and Yeti MTe (TQ motor, lighter weight). The Reign E+’s key differentiator is the mullet wheel setup — most competitors run full 29″ — and the three-position flip chip that offers the widest geometry adjustment range in its class. The 560Wh battery is smaller than the Levo’s 700Wh, but the range extender option closes that gap.
Related Geometry
More Giant geometry: 2023 Giant Anthem Geometry, 2023 Giant Glory Geometry, 2023 Giant Reign E+ Geometry, 2023 Giant Reign Geometry, 2023 Giant Reign SX Geometry.
Compare emtb bikes: 2023 Norco Fluid VLT Geometry, 2023 Norco Range VLT Geometry, 2023 Norco Sight VLT Geometry.
Frequently Asked Questions
What motor does the 2026 Giant Reign Advanced E+ use?
The 2026 Reign Advanced E+ uses Giant’s SyncDrive Pro 3 motor, which produces 90Nm of torque with PedalPlus 6-sensor technology for smooth, responsive power delivery.
What is the wheel size on the Giant Reign Advanced E+?
The Reign Advanced E+ runs a mullet wheel configuration: 29″ front wheel and 27.5″ rear wheel. This combines the rollover capability of 29″ up front with the agility of 27.5″ in the rear.
What battery does the Giant Reign Advanced E+ have?
The Reign E+ has a 560Wh integrated EnergyPak Smart battery, with an optional 280Wh EnergyPak Plus range extender available for extended rides.
What is the head angle on the Giant Reign Advanced E+?
The head angle is adjustable via a three-position flip chip: 63.1° (low), 63.5° (mid), and 63.9° (high). This allows riders to tune the bike’s handling from ultra-slack for gravity riding to slightly steeper for all-mountain versatility.
How much does the Giant Reign Advanced E+ cost?
The 2026 Reign Advanced E+ range starts at approximately $7,500 for the E+ 2 and goes up to $13,500 for the top-spec E+ 0 with premium FOX Factory suspension and SRAM XX Eagle components.