The Trek Marlin 4 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. It features a trail-savvy frame with a suspension fork, 8-speed Shimano ESSA shifting and mounts for a rack and kickstand that make it an ideal choice for trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike.
Sunset Cycles offers the 2026 Trek Marlin 4 Gen 3 hardtail bike in Blue Sage finish with up to 24 months 0% finance and free delivery.
The 2026 Trek MARLIN (GEN 3) range: Marlin 4 Gen 3 (Blue Sage) | Marlin 4 Gen 3 (Purple/Black) | Marlin 5 Gen 3 (Blue) | Marlin 5 Gen 3 (Green/Aqua) | Marlin 5 Gen 3 (Red) | Marlin 6 Gen 3 (Lava) | Marlin 6 Gen 3 (Lavender) | Marlin 6 Gen 3 (Lichen/Green) | Marlin 7 Gen 3 (Dark Web) | Marlin 7 Gen 3 (Mint) | Marlin 7 Gen 3 (Red/Grey)
| Frame & Fork | |
| Frame | Size: XS Alpha Silver Aluminium, curved top tube, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew Size: ML , M , L , S , XL , XXL Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew |
| Fork | Size: XS SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel Size: S SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel Size: ML , M , L , XL , XXL SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel |
| Wheels & Tyres | |
| Hub front | Formula DC-20, alloy, 6-bolt, 5x100 mm QR |
| Hub rear | Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR |
| Rim | Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve |
| Tyre | Size: XS , S Bontrager Montrose comp, wire bead, 30 tpi, 27.5x2.40" Size: ML , M , L , XL , XXL Bontrager Montrose comp, wire bead, 30 tpi, 29x2.40" |
| Drivetrain | |
| Shifter | Shimano M315, 8-speed |
| Rear derailleur | Shimano ESSA U2000 |
| Crank | Size: XS ProWheel alloy, 32T narrow-wide steel ring, 160 mm length Size: ML , M , S ProWheel alloy, 32T narrow-wide steel ring, 170 mm length Size: L , XL , XXL ProWheel alloy, 32T narrow-wide steel ring, 175 mm length |
| Cassette | Shimano HG300, 11-45, 8-speed |
| Chain | KMC Z8.3, 8-speed |
| Bottom bracket | Nylon platform |
| Components | |
| Saddle | Bontrager Verse Short, stainless steel rails |
| Seatpost | Size: M , XS , S Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length Size: ML , L , XL , XXL Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length |
| Handlebar | Size: XS Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width Size: S Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width Size: ML , M , L , XL , XXL Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width |
| Grips | Trek Line Comp, nylon lock-on |
| Stem | Size: XS , S Bontrager Comp, 31.8 mm, 7-degree, 35 mm length Size: ML , M , L Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length Size: XL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length Size: XXL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length |
| Head set | Semi-integrated, 1-1/8'' |
| Brake | Size: XS , S Tektro HD-M276 hydraulic disc Size: ML , M , XS , L , S , XL , XXL Power BH-M286TF hydraulic disc, 160 mm rotor Size: ML , M , L , XL , XXL Tektro HD-M275 hydraulic disc Size: ML , M , L , XL , XXL Power BH-M286TF hydraulic disc, 180 mm rotor |
| Brake rotor | Size: ML , M , XS , L , S , XL , XXL Tektro, 6-bolt, 160mm Size: ML , M , L , XL , XXL Tektro, 6-bolt, 180mm |
| Weight | |
| Weight | M - 14.90 kg / 32.85 lbs |
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
| Frame Size | Rider Height* (metric) | Rider Height* (imperial) |
| X Small | 145 - 155 cm | 4'9" - 5'1" |
| Small | 155 - 165 cm | 5'1" - 5'5" |
| Medium | 165 - 173 cm | 5'5" - 5'8" |
| Medium/Large | 173 - 180 cm | 5'8" - 5'11" |
| Large | 180 - 188 cm | 5'11" - 6'2" |
| X Large | 188 - 195 cm | 6'2" - 6'5" |
| XX Large | 195 - 203 cm | 6'5" - 6'8" |
| *This is for guidance only. You may be taller or shorter, it doesn't mean our bikes will not fit you. The best way to determine the correct bike size for you is to try one. Please contact us if you are in any doubt about the correct bike size for you. | ||