Trek Marlin 7 Gen 3 – 2026

Name: Trek Marlin 7 Gen 3 2026 Magic Mint
Brand: TREK
SKU: 3129-M2-MI-1-1-1
Price: 1499 AUD
Availability: InStock

Overview

Marlin 7 Gen 3 is a trail-ready hardtail that strikes a sweet balance between price and performance. The slacker trail geometry boosts confidence when the track points down, while the RockShox Judy Silver air fork smooths chatter and keeps you in control. A wide-range SRAM Eagle 12-speed drivetrain adds plenty of gears for WA climbs and fast rolling fire trails.

With practical mounts for racks and a kickstand plus tubeless-ready rims and real trail tyres, it’s a versatile bike that rides as well mid-week as it does on weekend singletrack.

Why We Recommend It

Confidence-boosting geometry and an air-sprung RockShox Judy Silver for better control.
SRAM NX/SX Eagle 12-speed gearing — simple, wide range and trail-proven.
Tubeless-ready Bontrager Kovee rims with Maxxis Rekon tyres for grip and easy upgrades.
Everyday practicality — integrated mounts for racks and a kickstand.

Specifications

Frameset

Frame (XS): Alpha Silver Aluminium, curved top tube, internal derailleur & dropper routing, rack & kickstand mounts, 135×5 mm ThruSkew.
Frame (S–XL): Alpha Silver Aluminium, internal derailleur & dropper routing, rack & kickstand mounts, 135×5 mm ThruSkew.
Fork (XS/S): RockShox Judy Silver, Solo Air, rebound adjust, TurnKey hydraulic lockout, 42 mm offset for 27.5″, 100 mm QR, 100 mm travel.
Fork (M–XL): RockShox Judy Silver, Solo Air, rebound adjust, TurnKey hydraulic lockout, 46 mm offset for 29″, 100 mm QR, 100 mm travel.

Wheels

Front Hub: Formula DC-20 LW alloy, 6-bolt, 100×5 mm.
Rear Hub: Formula DC-22 LW, 6-bolt, Shimano 8/9/10 freehub, 135×5 mm; 173×5 mm QR.
Rims (XS–XL): Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve.
Rims (M–XL add’l): Bontrager Kovee, double-wall, Tubeless-Ready, 32-hole, 23 mm width, Presta valve.
Tyres (XS/S): Maxxis Rekon, TLR, EXO casing, folding, 60 tpi, 27.5×2.40″.
Tyres (M–XL): Maxxis Rekon, TLR, EXO casing, folding, 60 tpi, 29×2.40″.
Rim Strip: Bontrager TLR.

Drivetrain

Shifter: SRAM SX Eagle, 12-speed.
Rear Derailleur: SRAM NX Eagle, 12-speed.
Crank (XS–M): SRAM SX Eagle, 30T steel ring, 49 mm chainline, 170 mm length.
Crank (ML–XL): SRAM SX Eagle, 30T steel ring, 49 mm chainline, 175 mm length.
Bottom Bracket: Truvativ Powerspline, 73 mm threaded cartridge, 118 mm spindle.
Cassette: SRAM PG-1210 Eagle, 11–50, 12-speed.
Chain: SRAM SX Eagle, 12-speed.
Pedals: VP-536 nylon platform.

Components

Saddle: Bontrager Verse Short, stainless steel rails.
Seatpost (XS/S): TranzX JD-YSI34 dropper, 100 mm travel, internal, 31.6 mm, 350 mm length.
Seatpost (M): TranzX JD-YSI34 dropper, 125 mm travel, internal, 31.6 mm, 405 mm length.
Seatpost (ML/L): TranzX JD-YSI34 dropper, 150 mm travel, internal, 31.6 mm, 456 mm length.
Seatpost (XL): TranzX JD-YSI34 dropper, 170 mm travel, internal, 31.6 mm, 500 mm length.
Handlebar (XS): Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width.
Handlebar (S): Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width.
Handlebar (M–XL): Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width.
Grips: Trek Line Comp, nylon lock-on.
Stem (XS/S): Bontrager Comp, 31.8 mm, 7°, 35 mm length.
Stem (M/ML/L): Bontrager Comp, 31.8 mm, Blendr compatible, 7°, 50 mm length.
Stem (XL): Bontrager Comp, 31.8 mm, Blendr compatible, 7°, 60 mm length.
Headset: Semi-integrated, 1-1/8″.