2025 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.

Frame	Alpha Silver Aluminium, internal routing, chainstay disc-brake mount, rack and kickstand mount, 135x5 mm QR
*Fork	Size: XS SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel
	Size: S SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel
	Size: M , ML , L , XL SR Suntour XCE 28, coil spring, preload, 46mm offset for 29'' wheel, 100mm QR, 100mm travel
Max compatible fork travel	100mm (XS & S: 490mm axle-to-crown, M & up: 509mm axle-to-crown)

Hub front	Formula DC-20, alloy, 6-bolt, 5x100 mm QR
Hub rear	Formula DC-31, alloy, 6-bolt, 6/7/8-speed freewheel, 135x5 mm QR
Skewer rear	152x5mm QR
Rim	Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Spokes	14g stainless steel, black
*Tire	Size: XS , S Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20"
*Tire	Size: M , ML , L , XL Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20"
Max tire size	Frame: 29x2.20" (XS & S: 27.5x2.40"), Fork: See manufacturer

*Shifter	Size: XS , S , M , ML , L , XL Shimano EF500, 2 speed
*Shifter	Size: XS , S , M , ML , L , XL Shimano Altus EF500, 7 speed
Front derailleur	Shimano Altus M315, 34.9mm clamp, top swing, dual pull
Rear derailleur	Shimano Tourney TY300
*Crank	Size: XS , S , M ProWheel TM-CY10, 36/22, 170mm length
*Crank	Size: ML , L , XL ProWheel TM-CY10, 36/22, 175mm length
Bottom bracket	VP BC73, 73mm, threaded cartridge
Cassette	Shimano TZ500, 14-34, 7 speed
Chain	KMC Z7, 7 speed
Pedal	VP-536 nylon platform
Max chainring size	1x: See FAQ, 2x: 36T, 3x: 42T

Saddle	Bontrager Verse Short, stainless steel rails
*Seatpost	Size: XS , S Bontrager alloy, 31.6mm, 12mm offset, 330mm length
	Size: M Bontrager alloy, 31.6mm, 12mm offset, 360mm length
	Size: ML , L , XL Bontrager alloy, 31.6mm, 12mm offset, 400mm length
*Handlebar	Size: XS , S Bontrager alloy, 31.8mm, 5mm rise, 690mm width
*Handlebar	Size: M , ML , L , XL Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips	Bontrager XR Endurance Comp, lock-on
*Stem	Size: XS , S Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length
	Size: M Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length
	Size: ML , L Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length
	Size: XL Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 80mm length
Headset	Semi-integrated, 1-1/8"
*Brake	Size: XS , S , M , ML , L , XL Tektro MD-M280 mechanical disc
	Size: XS , S , M , ML , L , XL Tektro MD-M281 mechanical disc
	Size: XS , S , M , ML , L , XL Tektro MD-M280 mechanical disc, 160mm rotor
*Brake rotor	Size: XS , S , M , ML , L , XL Tektro wave, 6-bolt, 160mm
*Brake rotor	Size: XS , S , M , ML Tektro, 6-bolt, 160mm
Rotor size	Max brake rotor sizes - Frame: 180mm, min 160mm, Fork: see fork manufacturer

Weight	M - 14.60 kg / 32.19 lbs