Giant Reign SE

Big Hits. All-Out Descents. Built to Dominate.

The Giant Reign SE is a trail-crushing enduro mountain bike designed for riders who live for steep lines, massive hits, and full-send descents. Built to thrive on the rowdiest trails and bike park terrain, this long-travel enduro machine combines aggressive geometry, race-bred suspension, and a one-of-a-kind paint treatment—so no two bikes look exactly the same.

With a mixed wheel setup—a fast-rolling 29-inch front wheel and a playful 27.5-inch rear—the Giant Reign SE blends high-speed stability with agility that pops off jumps and snaps through corners. Its frame geometry is purpose-built for a 165mm Maestro rear suspension paired with a 180mm fork, giving you maximum control when the trail turns steep, rough, and unforgiving.

Whether you’re charging enduro stages or lapping the bike park, the Giant Reign SE delivers confidence, control, and durability for riders who push hard and ride fast.

Key Performance Factors

Race-Bred Suspension

Giant’s proven Maestro rear suspension devours demanding enduro terrain with 165mm of smooth, active rear travel, perfectly matched to a 180mm front fork. A trunnion-mount rear shock provides a longer stroke for improved sensitivity and control, while the Advanced Forged Composite upper rocker arm increases stiffness and reduces overall frame weight for precision handling at speed.

Adjustable Enduro Geometry

A built-in flip chip allows riders to fine-tune the bike’s geometry based on terrain and riding style. Choose between a 62.6° or 63° head angle and a 77.4° or 77.8° seat tube angle, with a 20mm or 15mm bottom bracket drop (size medium). The result is dialed handling whether you’re racing steep enduro tracks or attacking technical descents.

Mixed Wheel Size Control

The 29-inch front wheel delivers speed, stability, and confidence over rough, technical terrain, while the 27.5-inch rear wheel boosts agility and maneuverability. This setup lets riders rail corners, pop over features, and stay playful without sacrificing control at high speeds.

Specs

• Sizes
  M, L, XL
• Colours
  Black Lightning/Chrome
• Frame
  ALUXX SL-grade aluminum front and rear triangles, 165mm Maestro suspension, flip chip - Maestro, 12x148mm thru-axle, 27.5-inch rear wheel compatible, integrated downtube storage
• Fork
  RockShox Zeb Ultimate, 180mm, Debonair, Charger 3.1 RC2 damper, 15x110mm, Maxle Stealth
• Shock
  RockShox Vivid Ultimate, RCT2, adjustable hydraulic bottom out, 205/65
• Handlebar
  Giant Contact TR35, 35mm rise, 35mm
• Grips
  Giant Tactal Pro single lock-on
• Stem
  Giant Contact SL 35
• Seatpost
  Giant Contact Switch AT adjustable dropper, remote M: 140-170mm travel / 30.9 x 470mm L/XL: 170-200mm travel / 30.9 x 530mm
• Saddle
  Giant Romero
• Pedals
  N/A
• Shifters
  SRAM Eagle 90, mechanical, 1x12
• Front Derailleur
  N/A
• Rear Derailleur
  SRAM Eagle 90 mechanical transmission
• Brakes
  SRAM Maven Silver, 4-piston, hydraulic SRAM HS2 rotors, [F]220mm, [R]200mm
• Brake Levers
  SRAM Maven
• Cassette
  SRAM XS-1270 V2 Eagle Transmission, 12-speed, 10x52
• Chain
  SRAM 70 Eagle Transmission
• Crankset
  SRAM 90, 32t, 55mm chainline
• Bottom Bracket
  SRAM DUB, press fit
• Rims
  Giant TRA 2 6069 alloy, welded, hookless 30mm IW, 40mm OW, 21mm H, Wide Guard technology [F] 29, [R] 27.5
• Hubs
  [F] Giant MTB alloy, 6-bolt [R] Giant MTB alloy, 72t POE, 6-bolt, 6-pawl, HG-driver
• Spokes
  Sapim Laser straight pull, DBL technology
• Tires
  [F] Maxxis Assegai 29x2.5" WT, 3C MaxxGrip, DD, TR, 120TPI, folding [R] Maxxis Minion DHR II 27.5x2.4" WT, 3C MaxxGrip, DD, TR, tubeless, 120TPI, folding
• Extras
  MRP AMG CS chain guide, 3M tailgate protector, integrated down tube storage bag, tubeless prepared, 2.5" max tire size, 36t max chainring size