Bike Comparison

The Polygon XTRADA 7, Trek Marlin 7, and Marin Bobcat Trail 4 are all 27.5″ / 29″ aluminum frame hardtail mountain bikes. The XTRADA 7 has a 1 × 12 drivetrain providing a wider range of gears, while the Marlin 7 has a better fork. Explore the differences below.

    2022 Polygon XTRADA 7
    2022 Trek Marlin 7
    2022 Marin Bobcat Trail 4
    MSRP$1,139$1,029$949
    Spec Level
    Where to Buy
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    CategoryTrailCrosscountryTrail
    Weight29.7 lbs
    FrameAluminumAluminumAluminum
    ForkSuntour XCR 32 AirRockShox JudySuntour XCM HLO
    WheelsAluminumAluminumAluminum
    Wheel Size27.5″ / 29″27.5″ / 29″27.5″ / 29″
    BrakesHydraulic DiscHydraulic DiscHydraulic Disc
    GroupsetDeore, ShimanoDeore, FSAmicroSHIFT Advent
    Drivetrain1 × 121 × 101 × 9
    SuspensionHardtailHardtailHardtail
    Front Travel120mm100mm120mm
    SeatpostRigidRigidRigid
    Brand Sitepolygonbikes.comtrekbikes.commarinbikes.com

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    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more »

    Spec level →$0$200$400$600$800$1,000
    XTRADA 7
    Marlin 7
    Bobcat Trail 4

    Gear Range

    Polygon XTRADA 7

    26 mph

    Trek Marlin 7

    22 mph

    Marin Bobcat Trail 4

    25 mph

    Learn More


    Geometry

    Specs
    Frame

    ALX XC TRAIL

    Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR

    Series 2 6061 Aluminum, 27.5" or 29” Wheels, Low Standover, 68mm BB shell, 135mm Forged Dropouts, IS Chainstay Disc Mount, Internal Housing & Dropper Post Routing

    Fork

    SR SUNTOUR XCR32 AIR LOR 120mm (27.5" & 29") TRAVEL

    Size: XS, RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: S, RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, XXL, RockShox Judy, coil spring, preload, TurnKey lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel

    SR Suntour XCM HLO-DS, 120mm Travel, Hydraulic Lockout, 46mm Offset

    Rear Shock

    -

    Bottom Bracket

    SHIMANO 2-PIECE CRANKSET BSA THREADED 73mm

    FSA, 73mm, threaded cartridge, 122.5mm spindle

    Sealed Cartridge Bearings, Square Taper

    Headset

    ZERO STACK (ZS) SEALED BEARING FOR TAPER HEAD TUBE, ZS 44/28.6 | ZS 56/40

    Semi-integrated, 1-1/8''

    FSA No.10-P

    Stem

    ENTITY XPERT ALLOY, EXT: 40mm, BAR BORE: 31.8mm, RISE/DROP: 7degree

    Size: XS, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: S, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: ML, L, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: XL, XXL, Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 90mm length

    Marin Alloy, 31.8mm Clamp, 45mm

    Handlebar

    ENTITY XPERT ALLOY, W: 760mm, BAR BORE: 31.8mm, RISE/DROP: 12mm, BEND: 6degree

    Size: XS, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: S, M, ML, L, XL, XXL, Bontrager alloy, 31.8mm, 5mm rise, 720mm width

    Marin 31.8 Riser, 12mm Rise, 780mm Width

    Saddle

    ENTITY VOID, STEEL ø 7mm

    Bontrager Arvada, steel rails, 138mm width

    Marin MTB

    Seatpost

    ENTITY XPERT ALLOY, DXL: 27.2 x 350mm, SEAT CLAMP: 31.8mm W/ QR

    Size: XS, S, M, Bontrager alloy, 31.6mm, 12mm offset, 330mm length; Size: ML, L, XL, XXL, Bontrager alloy, 31.6mm, 12mm offset, 400mm length

    Marin Alloy, 30.9

    Pedals

    Nylon Platform

    Grips

    Bontrager XR Trail Comp, nylon lock-on

    Marin MTB, Closed End

    Groupset
    Rear Derailleur

    SHIMANO DEORE RD-M6100-SGS DIRECT ATTACH

    Shimano Deore M5120, long cage

    MicroSHIFT Advent 9, Clutch

    Front Derailleur

    -

    Crank

    SHIMANO MT-510-1 BOOST 32T, 170mm (S, M) / 175mm (L, XL)

    Size: XS, S, M, FSA Alpha Drive, 28T steel ring, Boost, 170mm length; Size: ML, L, XL, XXL, FSA Alpha Drive, 28T steel ring, Boost, 175mm length

    Alloy Crank, Steel Narrow-Wide Chainring, 32T

    Shifters

    SHIMANO DEORE SL-M6100-R, 1x12-SPEED TRIGGER

    Shimano Deore M4100, 10 speed

    MicroSHIFT Advent 9 Trail

    Cassette

    SHIMANO DEORE CS-M6100 10-51T MICROSPLINE

    Shimano Deore M4100, 11-46, 10 speed

    SunRace 9-Speed, 11-46T

    Chain

    KMC X-12

    KMC X10, 10 speed

    KMC X9

    Brakes

    SHIMANO MT-201 HYDRAULIC DISC BRAKES

    Shimano MT200 hydraulic disc

    Hydraulic Disc

    Brake Levers

    SHIMANO BL-MT201

    Tektro M275 Hydraulic Disc

    Wheels
    Rims

    584 / 622-30 32H FOR TYRE 584 / 622-54/76 TUBELESS READY

    Bontrager Connection, double-wall, 32-hole, 20mm width, presta valve

    Marin Aluminum Double Wall, 25mm Inner, Pinned Joint, Disc Specific

    Spokes

    14g stainless steel

    Front Hub

    Formula DC-20, alloy, 6-bolt, 5x100mm QR

    Forged Alloy, Disc, 32H

    Rear Hub

    Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR

    Forged Alloy, Disc, 32H

    Tires

    WTB TRAIL BOSS COMP 27.5"x2.25" / 29"x2.25"

    Size: XS, S, Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20''; Size: M, ML, L, XL, XXL, Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20''

    WTB Trailboss Comp, 27.5/29x2.25, Wire Bead

    Disk Rotors

    SHIMANO SM-RT10 160mm CENTER-LOCK

    Size: XS, S, M, ML, L, XL, XXL, Shimano RT26, 6-bolt,160mm; Size: L, XL, XXL, Shimano RT26, 6-bolt,180mm