Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2021 Trek Marlin 7 Gen 2
Previous used estimate
$318 - $327
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Trek Marlin 7 Gen 2
12-month projected trend
10%
Direction and magnitude, not judgment
vs. category average
2%
Drops faster than category avg
Price over time - 2021 Trek Marlin 7 Gen 2
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Marlin model years
Overview
About this bike
Marlin 7 is where race-worthy mountain bikes begin. The smooth, lightweight RockShox fork and upgraded parts make this model the best choice for new riders who want a fast cross country hardtail that will hold its own against our higher-end race bikes.
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Rim
- Bontrager Connection Rim, 27.5'' 32h Disc, Presta, Black
- Component Fork
- Rock Shox Suspension Fork Judy TK, Medium Coil Spring, 27.5'' 100mm Travel
- Component Stem
- Bontrager Blendr Stem, 31.8x60mm, 7 Degree Rise, Black
- Component Tire
- Bontrager Tire XR2 Comp 27.5 x 2.20''; Bontrager Tire XR2 27.5x2.20
- Component Tube
- Bontrager Innertube 27.5x2.0-2.4 Presta Valve
- Product Family
- Marlin
- Component Armor
- Trek Marlin 29 2019 Chainstay Armor
- Component Chain
- KMC X10 10 Speed Chain
- Component Color
- Orangelight_Red; Bluedark_Grey; Greenlight_Black
- Component Crank
- FSA Alpha Drive Crankset, Model CK-759T, 170mm, 1X11, 28t, 4 bolt 82mm BCD, Black
- Component Decal
- Stick-On Trek Shield Headtube Badge, Black
- Component Frame
- Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR
- Component Grips
- Bontrager Grips XR Trail Comp Black
- Component Pedal
- VP Pedals 536C Platform Style, Black
- Component Nipple
- NIPPLE TREK APPROVED, 14G 12MM BRASS BLACK FINISH
- Component Saddle
- Bontrager Saddle Arvada Steel Rails Medium Black
- Component Spacer
- Headset Spacer, 10mm 1-1/8in, Black
- Component Spokes
- Trek Approved, J-Bend, 14g, Stainless, Black; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 270mm Front Non-Drive Side; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 270mm Rear Drive Side; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 272mm Front Drive Side; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 272mm Rear Non-Drive Side
- Component Bearing
- 3/16'' Loose Ball Bearings; 1/4'' Loose Ball Bearings
- Component Headset
- Headset 1.125 ZS VP A42 Black
- Component Shifter
- Shimano Deore Shifter. Item Number: SL-M4100-R, 10-Speed, Rapidfire Plus, Inner Cable Length: 2050mm, Without Optical Gear Display. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Component Cassette
- Shimano Deore Cassette. Item Number: CS-M4100, 10-Speed, 11-13-15-18-21-24-28-32-37-46T. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Component Fastener
- Fastener Trek Derailleur Hanger Bolt M5x0.8x9mm Countersunk head Stainless Steel 3mm Hex Head Driver; M5 X 16mm Water Bottle Bolt, Stainless Steel, Black
- Component Hub Axle
- Front Hub Rebuild Kit, for Approved Loose-Ball 6-Bolt Hubs; Rear Hub Rebuild Kit, for Approved Loose-Ball 6-Bolt Hubs
- Component Hub Body
- Freehub Body, 8/9/10-Speed Hyperglide, Bontrager Comp, FH-204 for OE hubs
- Component Rear Hub
- Formula DC-22 Rear Hub, 32H 6 bolt disc, Black
- Component Seatpost
- Bontrager Approved Seatpost, 31.6x330mm, 12mm Offset, Black
- Component Brake Pad
- Brake Pad, Shimano B-Series Shape : CONFIRM COMPATIBILITY BEFORE USE. BRAKE SPEC IS SUBJECT TO SUBSTITUTION AND MAY VARY.
- Component Brake Set
- Shimano Acera Brake Set. Item Number: BL-MT200(L) - BR-MT200(F), Resin Pad (without Fin), Post Mount, Hose: SM-BH59-SS, Hose length: 750mm, Compatible brake pads: B03S (Resin). (Visit si.shimano.com for compatibility, manuals and exploded views); Shimano Acera Brake Set. Item Number: BL-MT200(R) - BR-MT200(R), Resin Pad (without Fin), Post Mount, Hose: SM-BH59-SS, Hose length: 1700mm, Compatible brake pads: B03S (Resin). (Visit si.shimano.com for compatibility, manuals and exploded views)
- Component Front Hub
- Hub Front Formula DC-20 32H 6 bolt disc, Black
- Component Handlebar
- Bontrager Approved Lowriser, 31.8x720mm, 5mm Rise, 9D Bend/4D Upsweep, Black
- Component Rim Strip
- Rim Strip 27.5 inch X 25mm, Plastic, Presta, Red
- Component Rear Wheel
- Bontrager Connection 27.5'' Rear Wheel, 32H, Shimano 8/9/10-Speed Freehub, 6-bolt Disc, Presta Valve, 2019 Black Graphics; Rear Wheel, Kovee TLR Rim, DC-22 6-bolt Disc QR Hub, 32H, Shimano MTB Freehub, Black
- Component Brake Rotor
- Shimano Tourney Rotor. Item Number: SM-RT26-S, 160mm, 6-Bolt, For Resin Pad only. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Component Front Wheel
- Front Wheel, Bontrager Connection 27.5'' with DC-20 hub, 32H, Presta Valve, 2019 Black Graphics; Front Wheel, Kovee TLR Rim, DC-20 6-bolt Disc Hub, 32H, Black
- Component Rear Skewer
- Skewer Rear Formula, QR22, 135mm OLD, Black
- Component Seat Collar
- Seat Post Clamp 2012 Bontrager 36.4mm QR Black
- Component Bar End Plug
- Bontrager Handlebar End Plug
- Component Front Skewer
- Formula Front Skewer, 100mm OLD, Black
- Component Headset Part
- Bontrager Headset Topcap, w/ Star Nut, Black
- Component Bike Part Misc
- Trek Kickstand Mount Plug; Water Bottle Plug
- Component Bottom Bracket
- FSA Bottom Bracket, Square Taper, 73x122.5mm
- Component Touch Up Paint
- Paint Color: Matte Anthracite, TK006-M; Paint Color: Matte Nautical Navy, TK525-S
- Component Rear Derailleur
- Shimano Deore Derailleur Rear. Item Number: RD-M5120, 11-Speed, Direct Attachment, SGS Cage, Max 46T, Shadow Plus design. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Component Cable Housing Set
- Bontrager Shift Housing 4mm Black
- Component Derailleur Hanger
- Rear Derailleur Hanger, Trek FX/MTB Two-Bolt, Black
- Bottom Bracket
- FSA Bottom Bracket, Square Taper, 73x122.5mm
- Chain
- KMC X10 10 Speed Chain
- Seatpost
- Bontrager Approved Seatpost, 31.6x330mm, 12mm Offset, Black
- Saddle
- Bontrager Saddle Arvada Steel Rails Medium Black
- Handlebar
- Bontrager Approved Lowriser, 31.8x720mm, 5mm Rise, 9D Bend/4D Upsweep, Black
- Headset
- Headset 1.125 ZS VP A42 Black
- Rear Derailleur
- Shimano Deore Derailleur Rear. Item Number: RD-M5120, 11-Speed, Direct Attachment, SGS Cage, Max 46T, Shadow Plus design. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Stem
- Bontrager Blendr Stem, 31.8x60mm, 7 Degree Rise, Black
- Cassette
- Shimano Deore Cassette. Item Number: CS-M4100, 10-Speed, 11-13-15-18-21-24-28-32-37-46T. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Fork
- Rock Shox Suspension Fork Judy TK, Medium Coil Spring, 27.5'' 100mm Travel
- Frame
- Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR
- Front Hub
- Hub Front Formula DC-20 32H 6 bolt disc, Black
- Rear Hub
- Formula DC-22 Rear Hub, 32H 6 bolt disc, Black
- Shifter
- Shimano Deore Shifter. Item Number: SL-M4100-R, 10-Speed, Rapidfire Plus, Inner Cable Length: 2050mm, Without Optical Gear Display. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Color
- Orangelight_Red; Bluedark_Grey; Greenlight_Black
- Spokes
- Trek Approved, J-Bend, 14g, Stainless, Black; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 270mm Front Non-Drive Side; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 270mm Rear Drive Side; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 272mm Front Drive Side; Trek Approved 14g Round J-Bend, 6.2mm Elbow, Stainless Steel, Black, 272mm Rear Non-Drive Side
- Rear Wheel
- Bontrager Connection 27.5'' Rear Wheel, 32H, Shimano 8/9/10-Speed Freehub, 6-bolt Disc, Presta Valve, 2019 Black Graphics; Rear Wheel, Kovee TLR Rim, DC-22 6-bolt Disc QR Hub, 32H, Shimano MTB Freehub, Black
- Front Wheel
- Front Wheel, Bontrager Connection 27.5'' with DC-20 hub, 32H, Presta Valve, 2019 Black Graphics; Front Wheel, Kovee TLR Rim, DC-20 6-bolt Disc Hub, 32H, Black
- Cable Housing Set
- Bontrager Shift Housing 4mm Black
- Crank
- FSA Alpha Drive Crankset, Model CK-759T, 170mm, 1X11, 28t, 4 bolt 82mm BCD, Black
- Decal
- Stick-On Trek Shield Headtube Badge, Black
- Grips
- Bontrager Grips XR Trail Comp Black
- Nipple
- NIPPLE TREK APPROVED, 14G 12MM BRASS BLACK FINISH
- Pedal
- VP Pedals 536C Platform Style, Black
- Rim
- Bontrager Connection Rim, 27.5'' 32h Disc, Presta, Black
- Rim Strip
- Rim Strip 27.5 inch X 25mm, Plastic, Presta, Red
- Seat Collar
- Seat Post Clamp 2012 Bontrager 36.4mm QR Black
- Tire
- Bontrager Tire XR2 Comp 27.5 x 2.20''; Bontrager Tire XR2 27.5x2.20
- Touch-Up Paint
- Paint Color: Matte Anthracite, TK006-M; Paint Color: Matte Nautical Navy, TK525-S
- Tube
- Bontrager Innertube 27.5x2.0-2.4 Presta Valve
- Armor
- Trek Marlin 29 2019 Chainstay Armor
- Bar End Plug
- Bontrager Handlebar End Plug
- Bearing
- 3/16'' Loose Ball Bearings; 1/4'' Loose Ball Bearings
- Brake Rotor
- Shimano Tourney Rotor. Item Number: SM-RT26-S, 160mm, 6-Bolt, For Resin Pad only. (Visit si.shimano.com for compatibility, manuals and exploded views)
- Derailleur Hanger
- Rear Derailleur Hanger, Trek FX/MTB Two-Bolt, Black
- Fastener
- Fastener Trek Derailleur Hanger Bolt M5x0.8x9mm Countersunk head Stainless Steel 3mm Hex Head Driver; M5 X 16mm Water Bottle Bolt, Stainless Steel, Black
- Headset Part
- Bontrager Headset Topcap, w/ Star Nut, Black
- Front Skewer
- Formula Front Skewer, 100mm OLD, Black
- Rear Skewer
- Skewer Rear Formula, QR22, 135mm OLD, Black
- Spacer
- Headset Spacer, 10mm 1-1/8in, Black
- Brake Pad
- Brake Pad, Shimano B-Series Shape : CONFIRM COMPATIBILITY BEFORE USE. BRAKE SPEC IS SUBJECT TO SUBSTITUTION AND MAY VARY.
- Hub Body
- Freehub Body, 8/9/10-Speed Hyperglide, Bontrager Comp, FH-204 for OE hubs
- Brake Set
- Shimano Acera Brake Set. Item Number: BL-MT200(L) - BR-MT200(F), Resin Pad (without Fin), Post Mount, Hose: SM-BH59-SS, Hose length: 750mm, Compatible brake pads: B03S (Resin). (Visit si.shimano.com for compatibility, manuals and exploded views); Shimano Acera Brake Set. Item Number: BL-MT200(R) - BR-MT200(R), Resin Pad (without Fin), Post Mount, Hose: SM-BH59-SS, Hose length: 1700mm, Compatible brake pads: B03S (Resin). (Visit si.shimano.com for compatibility, manuals and exploded views)
- Hub Axle
- Front Hub Rebuild Kit, for Approved Loose-Ball 6-Bolt Hubs; Rear Hub Rebuild Kit, for Approved Loose-Ball 6-Bolt Hubs
- Bike Part Misc
- Trek Kickstand Mount Plug; Water Bottle Plug
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.