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2026 Marlin 7 Gen 3 Hardtail Mountain Bike

$1,399.99
SKU: TRE427791223  |  Barcode: 197216252849
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  • Will my bike have a curved top tube?

    Will my bike have a curved top tube?

    Smaller frames have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frame sizes have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

  • Fit for every rider

    Fit for every rider

    Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you’re on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.

  • High tech, high value

    High tech, high value

    Marlin looks and feels great. It’s packed with features usually found only on more expensive bikes, like a stylish frame with internal shift cable and brake hose routing, which can help your cables last longer by protecting them from the elements.

  • A better way to produce aluminum

    A better way to produce aluminum

    Starting in 2024, we began removing high-emission aluminum from our manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.

  • Upgrade your pedals and love your bike more

    Upgrade your pedals and love your bike more

    Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.

Overview

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 a RockShox suspension fork that makes quick work of rocks and bumps in your path, and tons of gears from the SRAM NX Eagle 12-speed drivetrain.

Technical Specifications

*frame Size: XS Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkewSize: S , M , ML , L , XL , XXL Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
*fork Size: XS , S RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travelSize: 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
Hub front Formula DC-20 LW, alloy, 6-bolt, 100x5mm
Hub rear Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5mm
Skewer rear 173x5mm QR
*rim Size: XS , S , M , ML , L , XL , XXL Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valveSize: M , ML , L , XL , XXL Bontrager Kovee, double-wall, Tubeless Ready, 32-hole, 23mm width, Presta valve
*tire Size: XS , S Maxxis Rekon, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.40''Size: M , ML , L , XL , XXL Maxxis Rekon, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.40''
Rim strip Bontrager TLR
Shifter SRAM SX Eagle, 12 speed
Rear derailleur SRAM NX Eagle, 12 speed
*crank Size: XS , S , M SRAM SX Eagle, 30T steel ring, 49mm chainline, 170mm lengthSize: ML , L , XL , XXL SRAM SX Eagle, 30T steel ring, 49mm chainline, 175mm 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
Saddle Bontrager Verse Short, stainless steel rails
*seatpost Size: XS , S TranzX JD-YSI34, 100mm travel, internal routing, 31.6mm, 350mm lengthSize: M TranzX JD-YSI34, 125mm travel, internal routing, 31.6mm, 405mm lengthSize: ML , L TranzX JD-YSI34, 150mm travel, internal routing, 31.6mm, 456mm lengthSize: XL , XXL TranzX JD-YSI34, 170mm travel, internal routing, 31.6mm, 500mm length
*handlebar Size: XS Bontrager alloy, 31.8mm, 5mm rise, 690mm widthSize: S Bontrager alloy, 31.8mm, 15mm rise, 720mm widthSize: M , ML , L , XL , XXL Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips Trek Line Comp, nylon lock-on
*stem Size: XS , S Bontrager Comp, 31.8mm, 7 degree, 35mm lengthSize: M , ML , L Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm lengthSize: XL Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm lengthSize: 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: XS , S , M , ML , L , XL , XXL Shimano RT26, 6-bolt, 160mmSize: M , ML , L , XL , XXL Shimano RT26, 6-bolt, 180mm
Brake set Shimano MT200 hydraulic disc
Weight M - 14.15 kg / 31.2 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

Parts are subject to change without notice. Chat with us if you have any questions.

Geometry

Bike geometry diagram

All measurements provided in cm unless otherwise noted.

Frame size number 14.5"15.5"17.5"18.5"19.5"21.5"23"
Frame size letter XSSMMLLXLXXL
Wheel size 27.5"27.5"29"29"29"29"29"
A — Seat tube 34.037.041.944.447.052.155.9
B — Seat tube angle (degrees)73.8°73.8°71.9°71.9°71.9°71.9°71.9°
Effective seat tube angle (degrees)74.0°74.0°73.0°73.0°73.0°73.0°73.0°
C — Head tube length 9.010.09.09.010.012.012.0
D — Head angle (degrees)66.5°66.5°69.5°69.5°69.5°69.5°69.5°
E — Effective top tube 55.157.960.261.863.865.967.3
F — Bottom bracket height 31.331.331.031.031.031.031.1
G — Bottom bracket drop 4.54.55.85.85.85.85.8
H — Chainstay length 43.343.343.843.843.843.843.8
I — Offset 4.24.24.24.24.24.24.2
J — Trail 11.011.09.39.39.39.39.3
K — Wheelbase 109.2112.1110.0111.6113.7115.9117.3
L — Standover 65.869.274.875.875.776.980.4
M — Frame reach 39.041.541.843.445.146.648.0
N — Frame stack 56.357.260.260.261.163.063.0

This Geometry Chart is provided by the Manufactuer. Chat with us if you have any questions.

Sizing

sizeinchescm
XS4'9" - 5'1"145 - 155
S5'1" - 5'5"155 - 165
M5'5" - 5'10"165 - 177
ML5'8" - 5'11"173 - 180
L5'10" - 6'2"177 - 188
XL6'2" - 6'5"188 - 195
2XL6'5" - 6'8"195 - 203

Sizing to be used as a reference only. Chat with us if you have any questions.

Marlin 7 Gen 3
Trek

2026 Marlin 7 Gen 3 Hardtail Mountain Bike

$1,399.99
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 a RockShox suspension fork that makes quick work of rocks and bumps in your path, and tons of gears from the SRAM NX Eagle 12-speed drivetrain.

Color

Size

  • XS (27.5" wheel)
  • S (27.5" wheel)
  • M (29" wheel)
  • ML (29" wheel)
  • L (29" wheel)
  • XL (29" wheel)
  • XXL (29" wheel)
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