Giant Bicycles

2022 Reign E+ 2

Class I E-bike.  Pedal assist up to 20 MPH.  

Every trail, every steep climb, every thrilling descent. Tested and developed by Giant’s E-bike enduro pros, this updated trail ripper gives you the power to enjoy the best parts of the ride again and again. A 29-inch front wheel and 27.5-inch rear wheel work together to offer superior handling and agility on technical terrain. The updated frameset features new geometry with a shorter rear end and longer reach. New control units include RideControl Go, which is integrated into the top tube, and RideControl Ergo 3, attached to the handlebar near the grip. A new flip chip feature lets you adjust frame geometry for riding style and terrain.

Key Performance Factors

Proven Maestro rear suspension (160mm) and a powerful but compact SyncDrive Pro motor technology boost your capabilities on steep climbs and rugged descents.

RideControl Ergo 3 offers integrated, user-friendly button controls that are easy to use. The Giant E-bike App gives you tuning options and E-bike specific fitness tracking.

Climb steep mountains and enjoy fun descents all day long with the downtube-integrated EnergyPak



How far can I expect to ride on a single battery charge?
The range for a single battery charge can vary greatly depending on conditions such as the combined weight of the rider and cargo; wind resistance; tire pressure and tread profile; terrain and elevation changes; road or trail surface; outdoor temperature; maintenance of the E-Bike; and the condition of the battery.

The bar below gives an approximate range. Conditions are categorized as extreme, good and ideal. Extreme conditions typically occur when riding with a heavy load, strong headwinds or excessive climbs.

EnergyPak Smart 625 / SyncDrive Pro

RANGE Extreme: 37 miles Good: 74 miles Ideal: 118 miles

Reign E+ 2 Specs

Motor SyncDrive Pro, 85Nm, powered by Yamaha
Sensor RideControl Ergo 3, grip integrated
Display RideControl GO, frame integrated LED displayANT+ Wireless display compatible
Battery EnergyPak Smart 625WhEnergyPak Plus range extender compatible
Sizes S, M, L, XL
Colors Black Diamond
Frame ALUXX SL-grade Aluminum, Advanced Forged Composite Upper Rocker, 160mm Maestro suspension system, 'Boost' 148x12mm, UDHTM derrailleur hanger
Fork RockShox ZEB Select 29er, 170mm travel, Charger RC damper, 15x110 Boost, Maxle Stealth
Shock Fox Float DPX2 Performance, EVOL Large Volume sleeve, 2-position lever, 205x62.5mm Trunnion mount, custom tuned
Handlebar Giant Contact Trail, 35x800mm
Grips Giant Tactal Pro-E, single lock-on
Stem Giant Contact SL 35
Seatpost Giant Contact Switch, dropper, 30,9mm (S:125, M: 150, L/XL:170)
Saddle Giant Romero Trail
Pedals Flat pedal
Shifters SRAM NX
Front Derailleur MRP 1X HD2 custom co-molded chain guide
Rear Derailleur SRAM GX 12-speed
Brakes SRAM Code R, hydraulic disc, 220mm[F] /200mm[R]

Brake Levers SRAM Code R
Cassette SRAM PG-1230, 11-50T, 12-speed
Chain SRAM NX Eagle PowerLock
Crankset SRAM X-Sync Eagle 36T chainring Praxis e-Cadet+ custom forged crankarm set (S/M:160, L/XL:165)
Bottom Bracket -
Rims Giant AM 29"[F] 27.5"[R], Tubeless ready, 30mm inner width
Hubs Giant eTracker Boost, Sealed cartridge bearing, 6-bolt, , [F] 110x15 [R] 148x12mm Thru-axle
Spokes Sapim E-Lite [r] Race [f]
Tires Fox Float DPS Performance, EVOL Large Volume sleeve, 2-position lever, 205x62.5mm Trunnion mount, custom tunedMaxxis Minion DHF 29x2.6" foldable, Tubeless, EXO+, 3C
MaxxTerra[F]Maxxis High Roller II 27.5x2.5" foldable, Tubeless,
DoubleDown, 3C MaxxTerra Compound [R]
Extras Tubeless kit (liquid, valves, levers, manual, tool)
Lighting Optional:- Giant Recon series e-bike lights available and direct connectable
Weight The most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality.


Sizing Guide / Geometry

SEAT TUBE LENGTH (mm) 400 425 450 475
SEAT TUBE ANGLE 76.7° | 77.5° 76.7° | 77.5° 76.7° | 77.5° 76.7° | 77.5°
TOP TUBE LENGTH (mm) 569 | 568 595 | 594 622 | 621 649 | 648
HEAD TUBE LENGTH (mm) 100 100 110 120
HEAD TUBE ANGLE 63.7° | 64.5° 63.7° | 64.5° 63.7° | 64.5 63.7° | 64.5°
FORK RAKE (mm) 44 44 44 44
TRAIL (mm) 135.5 | 132.1 135 | 132 135 | 132 135.5 | 132.1
WHEELBASE (mm) 1209 | 1210 1236 | 1237 1265 | 1266 1295 | 1296
CHAIN STAY LENGTH (mm) 454 | 454 454 | 454 454 | 454 454 | 454
BOTTOM BRACKET DROP (mm) 25 | 15 25 | 15 25 | 15 25 | 15
STACK (mm) 636 | 632 635 | 632 645 | 641 654 | 650
REACH (mm) 425 | 430 450 | 455 475 | 480 500 | 505
STAND OVER HEIGHT (mm) 785 | 789 772 | 776 771 | 775 768 | 772
HANDLEBAR WIDTH (mm) 800 800 800 800
STEM LENGTH (mm) 40 40 50 50
CRANK LENGTH (mm) 160 160 165 165
WHEEL SIZE F29" / R27.5" F29" / R27.5" F29" / R27.5" F29" / R27.5"



Testing the Reign E+


Developing the Reign E+


Reign E+ Bike Check