Trek Marlin 7 Gen 3

By Trek
$999.99
SKU: 5277386 // Barcode: 601842864012
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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 precise Shimano Deore shifting.
  • You get real-deal modern mountain bike geometry that keeps handling confident when youre on singletrack, but its versatile enough for use on roads and bike paths, too
  • Its upgraded RockShox fork gives you 100mm of suspension for turning rocks and roots in the trail into smooth-sailing
  • Fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter
  • Internal routing makes it easy to add a dropper post that lets you lower you saddle on the fly for more confident descending
  • Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount

Expanded size range

With 8 different sizes, Marlin has a bike made to fit every rider. Each frame is equipped with smart wheel sizing, with XXS frames rolling on 26" wheels, and wheel sizes increasing proportionally along with frame sizes, so every rider gets the fit they need.

Trail-ready, Upgrade-ready

The secret to Marlins popularity is a real trail-savvy mountain bike frame thats upgrade compatible, so it can grow with you as you take on bigger trails and tougher features.

Roll stronger with Thru Skew

Goodbye open dropouts. The Thru Skewer is a better, stronger, more precisely aligned rear wheel retention system that keeps your wheel more secure than quick-release skewers while still using the standard 135mm rear hub spacing.

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.


Frame Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
Fork RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5 wheel, 100mm QR, 100mm travel
Wheel Front /
Tire Bontrager XT3 Comp, wire bead, 30 tpi, 27.5x2.40
Hub Front Formula DC-20, alloy, 6-bolt, 100mm ThruSkew
Hub Rear Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR
Rim Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve
Skewer Rear Bontrager Switch thru axle
Shifter Shimano Deore M4100, 10 speed
Rear Derailleur Shimano Deore M5120, long cage
Crank FSA Alpha Drive, 28T steel ring, 55mm chainline, 170mm length
Bottom Bracket FSA, 73mm, threaded cartridge, 122.5mm spindle
Cassette Shimano Deore M4100, 11-46, 10 speed
Chain KMC X10, 10 speed
Brake Rotor Shimano RT26, 6-bolt,160mm
Pedal VP-536 nylon platform
Saddle Bontrager Arvada, steel rails, 138mm width
Seatpost Bontrager alloy, 31.6mm, 12mm offset, 330mm length
Handlebar Bontrager alloy, 31.8mm, 15mm rise, 720mm width
Stem Bontrager Comp, 31.8mm, 7 degree, 35mm length
Headset Semi-integrated, 1-1/8
Grips Bontrager XR Trail Comp, nylon lock-on

Geometry Chart

S (27.5" WHEEL)M (29" WHEEL)ML (29" WHEEL)L (29" WHEEL)XL (29" WHEEL)XXL (29" WHEEL)XS (27.5" WHEEL)
B B Drop 4.5
B B Height 31.3
Chainstay Length 43.3
Eff Seat Tube Angle 74.0°
Eff Top Tube 57.9
Frame Reach 41.5
Frame Size Letter S
Frame Size Number 15.5"
Frame Stack 57.2
Head Angle 66.5°
Head Tube Length 10
Offset 4.2
Seat Tube 37
Seat Tube Angle 73.8°
Standover 69.2
Trail 11
Wheelbase 112.1
Wheel Size 27.5"
B B Drop 6
B B Height 30.8
Chainstay Length 43.8
Eff Seat Tube Angle 74.0°
Eff Top Tube 61.5
Frame Reach 44
Frame Size Letter M
Frame Size Number 17.5"
Frame Stack 60.9
Head Angle 66.5°
Head Tube Length 10.5
Offset 4.6
Seat Tube 42
Seat Tube Angle 73.4°
Standover 74.7
Trail 11
Wheelbase 116.3
Wheel Size 29"
B B Drop 6
B B Height 30.8
Chainstay Length 43.8
Eff Seat Tube Angle 74.0°
Eff Top Tube 63.1
Frame Reach 45.5
Frame Size Letter ML
Frame Size Number 18.5"
Frame Stack 61.4
Head Angle 66.5°
Head Tube Length 11
Offset 4.6
Seat Tube 43.5
Seat Tube Angle 73.4°
Standover 75.9
Trail 11
Wheelbase 118
Wheel Size 29"
B B Drop 6
B B Height 30.8
Chainstay Length 43.8
Eff Seat Tube Angle 74.0°
Eff Top Tube 64.7
Frame Reach 47
Frame Size Letter L
Frame Size Number 19.5"
Frame Stack 61.8
Head Angle 66.5°
Head Tube Length 11.5
Offset 4.6
Seat Tube 45
Seat Tube Angle 73.4°
Standover 77.1
Trail 11
Wheelbase 119.7
Wheel Size 29"
B B Drop 6
B B Height 30.8
Chainstay Length 43.8
Eff Seat Tube Angle 74.0°
Eff Top Tube 67.8
Frame Reach 49.5
Frame Size Letter XL
Frame Size Number 21.5"
Frame Stack 63.7
Head Angle 66.5°
Head Tube Length 13.5
Offset 4.6
Seat Tube 50
Seat Tube Angle 73.4°
Standover 79.1
Trail 11
Wheelbase 123
Wheel Size 29"
B B Drop 6
B B Height 30.8
Chainstay Length 43.8
Eff Seat Tube Angle 74.0°
Eff Top Tube 70.7
Frame Reach 52
Frame Size Letter XXL
Frame Size Number 23.0"
Frame Stack 65.1
Head Angle 66.5°
Head Tube Length 15
Offset 4.6
Seat Tube 54
Seat Tube Angle 73.4°
Standover 81.6
Trail 11
Wheelbase 126.1
Wheel Size 29"
B B Drop 4.5
B B Height 31.3
Chainstay Length 43.3
Eff Seat Tube Angle 74.0°
Eff Top Tube 55.1
Frame Reach 39
Frame Size Letter XS
Frame Size Number 14.5"
Frame Stack 56.3
Head Angle 66.5°
Head Tube Length 9
Offset 4.2
Seat Tube 34
Seat Tube Angle 73.8°
Standover 65.8
Trail 11
Wheelbase 109.2
Wheel Size 27.5"