MountainVerified spec

2025 Giant Reign SX

Launched at $4,900Lists today at $4,000 (2026-09)

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What a used one is worth

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New

$3,822

$2,695 to $4,410

Like new

$3,631

$2,560 to $4,190

Excellent

$3,440

$2,426 to $3,969

Good

$2,867

$2,021 to $3,308

Fair

$2,102

$1,482 to $2,426

For parts

$1,147

$809 to $1,323

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Overview

Brand: Giant
Model family: Reign
Model year: 2025
Category: Mountain · enduro
Frame material: aluminum
Sizes: M, L, XL
Wheel size: 29/27.5
Wheel setup: mullet
Launch MSRP (US): $4,900
Current list price: $4,000 (as of 2026-09)

Drivetrain

Groupset: microSHIFT Advent X
Electronic: false

Build

Fork: RockShox BoXXer, Charger 3 RC damper, 190mm, 20x110, custom tuned for Giant
Stem: TruVativ Descendant Direct Mount 35, 50mm
Tires: [F] Maxxis Assegai 29x2.5 WT, 3C MaxxTerra, EXO+, TR [R] Maxxis Assegai 27.5x2.5 WT, 3C MaxxGrip, DD, TR tubeless
Brakes: TRP EVO DH-R, hydraulic, TRP rotors [F]220mm, [R]200mm
Saddle: Giant Romero
Wheels: Giant TRA 2 wheelset, 6061 alloy, hookless, 30mm inner width, 40mm outer width, 21mm height, Wide Guard Technology
Cassette: microSHIFT Advent X, 11-48
Crankset: Praxis Cadet HD M24, 32t, 165mm, 55mm chainline
Seatpost: Giant Contact, 30.9mm, 400mm
Shifters: microSHIFT Trail Trigger Pro, 1x10
Handlebar: Giant Contact SL TR35, 800x35mm, 20mm rise
Rear shock: RockShox Vivid Base, lockout, 205/65
Travel rear mm: 165
Rear derailleur: microSHIFT Advent X
Travel front mm: 190

Geometry

L: Reach mm: 472; Stack mm: 644; Chainstay mm: 443; Wheelbase mm: 1283; Head angle deg: 63.1; Seat angle deg: 77
M: Reach mm: 452; Stack mm: 635; Chainstay mm: 443; Wheelbase mm: 1228; Head angle deg: 63.1; Seat angle deg: 77.9
XL: Reach mm: 503; Stack mm: 648; Chainstay mm: 443; Wheelbase mm: 1316; Head angle deg: 63.1; Seat angle deg: 77

Mixed wheel setup as published: F 29 | R 27.5. Price labels fixed 2026-09-27: msrp_usd set to the launch price $4,900 from a launch-season web.archive.org capture of the Giant US product page dated 2024-10-04, and the $4,000 shown on the archived model-year page (observed 2026-09-21) moved to list_price_usd (as of 2026-09).

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