Bike Comparison
    MSRP
    $1,499$2,189$1,375
    Where to Buy
    $1

    At

    $1

    At

    $1

    At

    Category
    TrailTrailCrosscountry
    Weight
    37.6 lbs
    4.3
    4.5
    3.2
    AluminumAluminumAluminum
    Fork
    Suntour XCR Air (air)RockShox Recon Silver RL (air)Suntour XCM (coil)
    Shock
    X-FusionSuntour
    Wheels
    AluminumAluminumAluminum
    27.5″29″27.5″
    Brakes
    Hydraulic DiscHydraulic DiscHydraulic Disc
    Groupset
    DeoreDeore, FSAAcera
    Drivetrain
    1 × 101 × 121 × 9
    Suspension
    FullFullFull
    Front Travel
    120mm130mm120mm
    Rear Travel
    120mm125mm100mm
    Brand Site

    bikesonline.com

    marinbikes.com

    diamondback.com

    Summary
    The Polygon Siskiu D6 Dual Suspension, Marin Rift Zone 29 2, and Diamondback Atroz 2 are all aluminum frame full suspension mountain bikes. The Rift Zone 29 2 has 29″ aluminum wheels, a better fork, more travel, and a 1 × 12 drivetrain providing a wider range of gears; while the Atroz 2 has a rigid seatpost.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    Rift Zone 29 2
    Atroz 2
    Other Trail bikes
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    26 mph

    Siskiu D6 Dual Suspension

    28 mph

    Rift Zone 29 2

    22 mph

    Atroz 2

    Highest gear

    (descending)

    Spec Level

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

    Geometry
    Specs
    Frame

    ALX XC Trail 6061 Aluminum Frame, 120mm Travel, Internal Routed Gear & Dropper Cables, Tapered Headtube, 73mm Threaded Boost BB, 148x12mm Boost Thru-Axle

    BB StandardBSA, 73mm, Threaded

    Series 3 6061 Aluminum Frame, 29” Wheels, 125mm Travel, MultiTrac Suspension Platform, 148x12 Boost Spacing2, 73mm Threaded BB w/ ISCG05 Tabs

    BB StandardBSA, 73mm, Threaded

    Atroz 6061 T-6 Aluminum 27.5 Trail w/ 4" travel, Optimized Single Pivot, Tapered Steerer, Machine Formed Top Tube, Butted / Formed Down Tube, Sealed Cartridge Bearing Pivot, Seat Tube Routed for Internal Dropper Post, Aggressive Geometry, Replaceable Hanger

    BB StandardBSA, 73mm, Threaded

    Fork

    SR Suntour XCR 32, Air Spring, 120mm Travel (27.5" & 29"), Rebound & Compression Adjuster, 15x100mm Thru-Axle

    Travel130mm

    Spring TypeAir

    RockShox Recon Silver RL 29", 130mm Travel, Solo Air, Compression and Rebound Adjustment, Alloy Tapered Steerer, Fast Black Uppers, 110x15mm Boost Spacing, Maxle Stealth, 42mm Offset

    Travel130mm

    Spring TypeAir

    SR Suntour XCM 120mm Travel, 30mm Stanchions, w/ Preload Adjust

    Travel130mm

    Spring TypeAir

    Shock

    X-Fusion O2 Pro RL, Air Spring, Rebound & Compression Adjuster, E2E 190x45mm, M8x25mm Hardware

    Travel100mm

    Spring TypeCoil

    Travel100mm

    Spring TypeCoil

    SR Suntour Raidon-R, Air Shock w/ Rebound Adjust, 184x44mm

    Travel100mm

    Spring TypeCoil

    Bottom Bracket

    Shimano BSA Threaded 73mm

    External Sealed Cartridge Bearing

    Sealed Cartridge

    Headset

    Threadless Zero Stack Headset, ZS 44/28.6 | ZS 56/40

    FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”

    FSA NO.57, Sealed Cartridge for Tapered Headtube

    Stem

    Entity Sport, Alloy, 0 Degree

    Marin 3D Forged Alloy, 35mm

    Diamondback "Shortie", 45mm Reach, 31.8 Bar Bore

    Handlebar

    Entity Sport, Alloy, 12mm Rise, 6 Degree Back Sweep, 31.8mm

    Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back

    Diamondback, 750mm Wide, 15mm Rise, 31.8 Bar Bore

    Saddle

    Entity Void Saddle

    Marin Speed Concept

    DB Sync'r Saddle

    Seatpost

    TranzX JD-YSP23JL Dropper Post, Zero Offset, 30.9mm, Remote Lever

    TranzX, YSP23JL, 1x Remote, Size S 125mm Travel, Size M and L 150mm Travel, Size XL 175mm Travel, 30.9mm

    Aluminum Micro Adjust, 30.9mm

    Pedals

    Flat Alloy

    -

    DB4L Aluminum Platform

    Grips

    Marin Single Clamp Locking

    New DB "Flanged" 135mm Silcone

    Groupset
    Rear Derailleur

    Shimano Deore RD-M5120, 10-Speed, Direct Mount

    Shimano Deore, 12-Speed, SGS

    Shimano Acera M3000 Shadow, 9 Speed

    Front Derailleur

    -

    Full ISCG-05 Chain Guide w/ Roller

    Crank

    Shimano Deore FC-MT5100, 32T, 10-Speed, Hollowtech II, Boost

    FSA Comet, Modular 1x, 32T Direct Mount Chainring, MegaTooth Technology, Boost Spacing

    Aluminum Arm w/ 30T Steel "Narrow Wide" Single Ring

    Shifters

    Shimano SL-M4100 1x10-Speed Trigger

    Shimano Deore, 12-Speed, SL-6100IR

    Shimano Acera M3000, 9 Speed

    Cassette

    Shimano CS-M4100, 10-46T, 10-Speed

    Shimano, Deore M6100, 12-Speed, 10-51T

    Shimano HG200, 9 Speed, 11-36T

    Chain

    KMC X10, 10-Speed

    KMC X-12 Silver and Black

    KMC Z9, 9 Speed

    Brakes

    Shimano BR-M201 Hydraulic

    Hydraulic Disc

    Shimano MT200 Hydraulic Disc, w/ 180mm Front and Rear Rotors

    Brake Levers

    Shimano BL-MT201 Hydraulic Disc

    Shimano MT200 Hydraulic

    Wheels
    Rims

    Entity X15 Doublewall Disc 32H, 25mm Internal Width, Tubeless Ready **

    Marin, Double Wall Alloy, 29mm Inner, Pinned Joint, Disc Specific, 32H, Tubeless Compatible

    32H, DDM-5, 27.5 Double Wall, Not Taped

    Spokes

    Entity Stainless, Brass Nipple

    14g Stainless Steel

    Front Hub

    Shimano HB-MT400, Thru Axle 15x100mm, 32H Center-Lock

    Shimano HF-MT410B, 110x15mm, Centerlock

    Formula Hubs, 32h Aluminum w/ CNC Disc Mount

    Rear Hub

    Shimano FH-MT400, Thru Axle 12x148mm, 32H Center-Lock

    Shimano HB-MT410B, 148x12mm, Centerlock, Microspline Freehub Body

    Formula Hubs, 32h Aluminum Cassette w/ CNC Disc mount

    Tires

    Entity Spiderbait 27.5x2.25" / 29x2.25" *

    Vee Tire Flow Snap 29x2.35", Tackee Compound, Tubeless Ready

    VEE Rubber, Flow Snap, 27.5x2.35, Non Tubless Tire

    Disc Rotors

    Shimano SM-RT10 Centerlock, F: 180mm / R: 160mm

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