Trek Marlin 4 Gen 2 Bike 2025 Overview
Build
| Frame |
Size: XS, S, Alpha Silver Aluminum, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR; Size: M, ML, L, XL, Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR BB Standard:?BSA, 73mm, Threaded Tire Clearance:?2.2″ Colors:?Dnister Black; Matte Hex Blue; Crimson |
|---|---|
| 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 Travel:?100mm Spring Type:?Coil |
| Bottom Bracket |
VP BC73, 73mm, threaded cartridge |
| Headset |
Semi-integrated, 1-1/8” |
| 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 |
| Handlebar |
Size: XS, S, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: M, ML, L, XL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
| 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 Type:?Rigid |
| Pedals |
VP-536 nylon platform |
| Grips |
Bontrager XR Endurance Comp, lock-on |
Groupset
| Rear Derailleur |
Shimano Tourney TY300 |
|---|---|
| Front Derailleur |
Shimano Altus M315, 34.9mm clamp, top swing, dual pull |
| Crank |
Size: XS, S, M, ProWheel TM-CY10, 36/22, 170mm length; Size: ML, L, XL, ProWheel TM-CY10, 36/22, 175mm length |
| Shifters |
Size: XS, S, M, ML, L, XL, Shimano EF500, 8 speed; Size: XS, S, M, ML, L, XL, Shimano EF500, 7 speed |
| Cassette |
Shimano TZ500, 14-34, 7 speed |
| Chain |
KMC Z7, 7 speed |
| Brakes |
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; Size: XS, S, M, ML, L, XL, Tektro MD-M281 mechanical disc, 160mm rotor Type:?Mechanical Disc |
Wheels
| Rims |
Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve |
|---|---|
| Spokes |
14g stainless steel, black |
| Front Hub |
Formula DC-20, alloy, 6-bolt, 5x100mm QR |
| Rear Hub |
Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135x5mm QR |
| Tires |
Size: XS, S, Bontrager XR2 Comp, wire bead, 30 tpi, 27.5×2.20”; Size: M, ML, L, XL, Bontrager XR2 Comp, wire bead, 30 tpi, 29×2.20” |
| Disc Rotors |
Size: XS, S, M, ML, L, XL, Tektro wave, 6-bolt, 160mm; Size: XS, S, M, ML, Tektro, 6-bolt, 160mm |












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