2025 Trek Marlin 5 Gen 3 – Mountain Bike
Specifications
| Specification | Details | 
| Model | Marlin 5 Gen 3 | 
| Vehicle Category | Mountain Bike | 
| Application | Trail riding, cross-country, commuting | 
| Starting Price (2025) | $799.99 USD | 
| Color Options | Power Surge, Matte Trek Black, Radioactive Green, Purple/Black | 
| Sizes | XS (27.5" wheel), S (27.5" wheel), M (29" wheel), ML (29" wheel), L (29" wheel), XL (29" wheel) | 
Frame & Drivetrain
| Specification | Details | 
| Frame | Alpha Silver Aluminum, internal cable routing, rack & fender mounts, post mount disc, kickstand mount, 135x5mm QR | 
| Fork | SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 100mm travel, 100mm QR | 
| Drivetrain Compatibility | Shimano CUES U4000, 9-speed | 
| Dropouts | 135x5mm QR (F), 135x5mm QR (R) | 
| Crank | Prowheel C10Y-NW, 36T narrow-wide, 170mm length (XS, S, M), 175mm length (ML, L, XL) | 
| Chain | Shimano LG500 | 
| Rear Derailleur | Shimano CUES U4000 | 
| Shifters | Shimano CUES U4000, 9-speed | 
| Cassette | Shimano CUES LG300, LINKGLIDE, 11-46T, 9-speed | 
Components & Features
| Specification | Details | 
| Seating | Bontrager Arvada, steel rails, 138mm width | 
| Cargo Capacity | Rack & fender mounts, kickstand mount | 
| Wheels/Tyres | Bontrager XR3 Comp, wire bead, 30 tpi, 27.5x2.20" (XS, S), 29x2.20" (M, ML, L, XL) | 
| Wheel Size | 27.5" (XS, S), 29" (M, ML, L, XL) | 
| Brakes | Tektro HD-M275 hydraulic disc, 180mm rotor (F), 160mm rotor (R) | 
| Brake Levers | Tektro HD-M275 hydraulic | 
| Handlebar | Bontrager alloy, 31.8mm, 5mm rise, width: 690mm (XS, S), 720mm (M, ML, L, XL) | 
| Stem | Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, length: 60mm (XS), 70mm (S), 80mm (M), 90mm (ML, L, XL) | 
| Headset | 1-1/8" threadless, sealed cartridge bearings | 
| Saddle | Bontrager Arvada, steel rails, 138mm width | 
| Seatpost | Bontrager alloy, 27.2mm, 12mm offset, length: 330mm (XS, S, M), 400mm (ML, L, XL) | 
| Seatpost Clamp | Knurled, quick release | 
| Grips | Bontrager XR Endurance Comp, lock-on | 
| Front Hub | Formula DC-20, alloy, 6-bolt, 5x100mm QR | 
| Rear Hub | Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR | 
| Rims | Bontrager Connection, double-wall, 32-hole, 20mm width, Schrader valve | 
| Spokes | Stainless steel, 14g | 
| Pedals | Wellgo nylon platform | 
| Exterior Features | Rack & fender mounts, kickstand mount, internal cable routing | 
| Weight | 13.77 kg (M) | 

