Trek Marlin 4 Gen 2

Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack. It's ideal for riders who want a mountain bike with knobby tires that can double as a rugged commuter. Disc brakes, front suspension, Shimano 14-speed shifting, and mounts for a rack and fenders make this a great bike for trail riders and campus commuters alike.

• Marlin Gen 2 is ready to roll with easy to use features that help you get the best bang for your buck
• Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter
• Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently
• Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount
• Like every model in the Marlin family, it's backed by Trek's lifetime warranty

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

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

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.

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, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR
Fork	SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel
Tire	Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20''
Hub Front	Formula DC-20, alloy, 6-bolt, 5x100mm QR
Hub Rear	Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135x5mm QR
Rim	Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Spokes	14g stainless steel, black
Skewer Rear	152x5mm QR
Shifter	Shimano EF500, 8 speed // Shimano EF500, 7 speed
Front Derailleur	Shimano Altus M315, 34.9mm clamp, top swing, dual pull
Rear Derailleur	Shimano Tourney TY300
Crank	ProWheel TM-CY10, 36/22, 170mm length
Bottom Bracket	VP BC73, 73mm, threaded cartridge
Cassette	Shimano TZ500, 14-34, 7 speed
Chain	KMC Z7, 7 speed
Brake	Tektro MD-M280 mechanical disc // Tektro MD-M281 mechanical disc // Tektro MD-M280 mechanical disc, 160mm rotor // Tektro MD-M281 mechanical disc, 160mm rotor
Brake Rotor	Tektro wave, 6-bolt, 160mm
Pedal	VP-536 nylon platform
Saddle	Bontrager Verse Short, stainless steel rails
Seatpost	Bontrager alloy, 31.6mm, 12mm offset, 330mm length
Handlebar	Bontrager alloy, 31.8mm, 5mm rise, 690mm width
Stem	Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length
Headset	Semi-integrated, 1-1/8''
Grips	Bontrager XR Endurance Comp, lock-on

Geometry Chart

B B Drop	5.8
B B Height	29.2
Chainstay Length	43.8
Eff Seat Tube Angle	73.5°
Eff Top Tube	54.4
Frame Reach	37.6
Frame Size Letter	XS
Frame Size Number	13.5"
Frame Stack	56.5
Head Angle	69.3°
Head Tube Length	9
Offset	4.2
Seat Tube	34.3
Seat Tube Angle	73.5°
Standover	65.8
Trail	8.8
Wheelbase	104.9
Wheel Size	27.5"