Trek Marlin 7 Gen 3 2025

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Marlin 7 is your best friend on the trail and wherever else you roll thanks to its confidence-boosting trail geometry. It finds the perfect balance between price and performance with an upgraded RockShox suspension fork that makes quick work of rocks and bumps in your path, and the huge gearing range of a SRAM 12-speed SX Eagle drivetrain.

*Frame	Size: XXS , XS Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
*Frame	Size: S , M , ML , L , XL , XXL Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
*Fork	Size: XXS RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 100 mm QR, 80 mm travel
	Size: XS , S RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel
	Size: XS , S , M , ML , L , XL , XXL RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 100 mm QR, 100 mm travel
	Size: M , ML , L , XL , XXL RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel
Max compatible fork travel	120mm, XXS: 80mm

Wheels

Hub front	Formula DC-20 LW, alloy, 6-bolt, 5x100mm QR
Hub rear	Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR
Skewer rear	173x5mm QR
Rim	Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve
*Tire	Size: XXS Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 26x2.40''
	Size: XS , S Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.40''
	Size: M , ML , L , XL , XXL Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.40''
Max tire size	Frame: 29x2.40" (XXS: 26x2.40", XS & S: 27.5x2.40"), Fork: See manufacturer

Drivetrain

Shifter	SRAM SX Eagle, 12 speed
Rear derailleur	SRAM SX Eagle
*Crank	Size: XXS SRAM SX Eagle, 30T steel ring (49mm chainline), 155 mm length
	Size: XS , S , M SRAM SX Eagle, 30T steel ring (49mm chainline), 170 mm length
	Size: ML , L , XL , XXL SRAM SX Eagle, 30T steel ring (49mm chainline), 175 mm length
Bottom bracket	Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle
Cassette	SRAM PG-1210 Eagle, 11-50, 12 speed
Chain	SRAM SX Eagle, 12 speed
Pedal	VP-536 nylon platform
Max chainring size	1x: 34T, 2x: 36/22

Components

Saddle	Bontrager Verse Short, stainless steel rails
*Seatpost	Size: XXS , XS , S TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length
	Size: M TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length
	Size: ML , L , XL , XXL TranzX JD-YSP18, 150mm travel, internal routing, 31.6mm, 470mm length
*Handlebar	Size: XXS , XS Bontrager alloy, 31.8mm, 5mm rise, 690mm width
	Size: S Bontrager alloy, 31.8mm, 15mm rise, 720mm width
	Size: M , ML , L , XL , XXL Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips	Bontrager XR Trail Comp, nylon lock-on
*Stem	Size: XXS , XS , S Bontrager Comp, 31.8mm, 7 degree, 35mm length
	Size: M , ML , L Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length
	Size: XL Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length
	Size: XXL Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length
Headset	Semi-integrated, 1-1/8"
Brake	Shimano MT200 hydraulic disc
*Brake rotor	Size: XXS , XS , S , M , ML , L , XL , XXL Shimano RT26, 6-bolt,160 mm
*Brake rotor	Size: M , ML , L , XL , XXL Shimano RT26, 6-bolt,180 mm
Brake Set	Shimano MT200 hydraulic disc
Rotor size	Max brake rotor sizes - Frame: 180mm (XXS: 160mm), Fork: see fork manufacturer

Weight

Weight	M - 14.85 kg / 32.74 lbs (with TLR sealant, no tubes)
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

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