2025 Giant Anthem Advanced SL 1

2025 Giant Anthem Advanced SL 1

Born from the bike that helped Giant pro Alan Hatherly win the 2025 Elite Men’s XCO World Championship, the 2025 Giant Anthem Advanced SL 1 is a superlight cross-country rocket engineered for riders who refuse to leave performance on the trail. The completely redesigned Advanced SL composite frame is 89 grams lighter than its predecessor, with a 7.95% improvement in stiffness-to-weight ratio — every watt you put in goes straight to the wheels.

With 120 mm of FlexPoint Pro rear suspension, a RockShox Sid Select+ fork up front, SRAM GX AXS wireless drivetrain, and Shimano Deore XT brakes, this is a race-proven XC weapon that’s equally at home on technical climbs and rough descents.

Key Performance Features

• FlexPoint Pro Suspension: 120 mm responsive rear travel paired with 120 mm front fork for control on descents and efficiency on climbs
• Flip Chip Geometry: Fine-tune the bike’s geometry to suit any XC terrain or riding style
• 89g Lighter Frame: Redesigned Advanced SL composite with 7.95% better stiffness-to-weight ratio vs. previous gen
• 120-Tooth Helical Ratchet Hub: Near-instant power engagement with Giant XCR WheelSystem
• Integrated Cockpit: One-piece composite handlebar & stem for compliance, vibration absorption & clean routing
• Repositioned Rear Shock: Partially integrated into top tube to save weight & add a second water bottle cage
• SRAM GX AXS Transmission: Wireless 12-speed electronic shifting
• Shimano Deore XT Brakes: 180 mm front / 160 mm rear hydraulic disc

Frame & Suspension

• Frame: Advanced SL-grade composite front & rear triangles, 120 mm FlexPoint Pro suspension, flip chip, 12×148 mm thru-axle
• Fork: RockShox Sid Select+ 3P, 120 mm, Charger Race Day 2 damper, Boost 15×110, 44 mm offset, remote lockout
• Shock: RockShox SidLuxe Select+, RL damper, Solo Air, 210/50, TwistLoc Ultimate

Drivetrain

• Rear Derailleur: SRAM GX AXS Transmission
• Crankset: SRAM GX Transmission, 34T — S/M: 170 mm, L/XL: 175 mm
• Cassette: SRAM XS 1275, 10–52T, 12-speed
• Chain: SRAM GX Transmission
• Shifters: SRAM AXS Pod, discrete clamp, 1×12
• Bottom Bracket: SRAM DUB, press fit
• Chain Guide: MRP 1x CS

Brakes

• Brakes: Shimano Deore XT BR-M8220 Hydraulic Disc
• Levers: Shimano Deore XT BL-M8200
• Rotors: Shimano RT-66 — 180 mm front / 160 mm rear

Cockpit

• Handlebar: Giant Integrated XC Composite, 780 mm, 9° upsweep
• Stem: Giant Integrated XC Carbon — S: 60 mm / M&L: 70 mm / XL: 80 mm
• Grips: SRAM TwistLoc Ultimate
• Saddle: Giant Grit SL
• Seatpost: Giant Contact Switch SL Dropper — S: 110 mm travel / M&L: 140 mm travel (30.9×395 mm)

Wheels & Tires

• Rims: Giant XCR WheelSystem
• Front Hub: Giant MTB Alloy, 6-bolt | Rear Hub: Giant MTB Alloy, 6-bolt
• Spokes: Carbon
• Tires: Maxxis Aspen 29″×2.4″, Foldable, 120 TPI, MaxxSpeed, EXO, Tubeless Ready

Sizes & Geometry

• Available Sizes: S, M, L, XL
• Colors: Rainbow Black / Rainbow Charcoal
• Max Tire Size: 2.4″ | Max Chainring: 34T
• Tubeless prepared

Geometry (Low / High Flip Chip)