Marin Bikes

Rift Zone 29 3

2021 Marin Rift Zone 29 3 profile.

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  • Suspension: Marzocchi Bomber Z2 29" / Fox Float DPS
  • Wheel Size: 29"
  • Frame: Aluminum
  • Size Range: S, M, L, XL

FAST PACED, EPIC RIDES

PUSHING THE ENVELOPE UP AND DOWN THE TRAIL

CHASING PERSONAL RECORDS

The Rift Zone is our most speed oriented MultiTrac bike, created for the rider looking for the speed and roll over capabilities of 29” wheels in a trail capable package. Long, low, and slack trail geometry is more aggressive than an XC race bike for more control at top speed, and more fun while chasing seconds.

Key upgrades from Rift Zone 29 2:

  • Marzocchi Bomber/Fox Float DPS suspension
  • Shimano SLX drivetrain
  • Shimano M420 4-piston brakes

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Specifications

  • Frame

    Series 3 6061 Aluminum Frame, 29” Wheels, 125mm Travel, MultiTrac Suspension Platform, 148x12mm Boost Thru-Axle, 73mm Threaded BB w/ ISCG05 Tabs

  • Front Suspension

    Marzocchi Bomber Z2 29", Rail Damper with Sweep Adjustment, 130mm Travel, Kabolt Bolt-On Axle, 44mm Offset

  • Rear Suspension

    Fox Float DPS, Performance Series, EVOL Air Spring, 3 Position Compression Adjustment, Rebound Adjustment, Custom Tune, 210x50mm, M8x25mm Hardware Top and Bottom

  • Rims

    Marin Aluminum Double Wall, 29mm Inner, Sleeved Joint, Disc Specific, Tubeless Compatible

  • Hub, Rear

    Forged Alloy, 148x12mm, Quad Sealed Bearings, 32H, Standard Freehub Body

  • Hub, Front

    Forged Alloy, 110x15mm, 32H

  • Spoke, Nipples

    14g Black Stainless Steel

  • Tires

    Vee Tire Co, Flow Snap, 29x2.35, Tackee Compound, 72 TPI, Tubeless Compatible

  • Derailleur, Rear

    Shimano SLX SGS, Direct Attachment, 12-Speed

  • Derailleur, Front

    -

  • Shift Lever

    Shimano SLX, 12-Speed, SL-6100IR

  • Crankset

    FSA GRID, Modular 1x, 32T Direct Mount Chainring, MegaTooth Technology, Mego EXO Spindle, Boost Spacing

  • Bottom Bracket

    Mego EXO 73mm BSA

  • Chain

    KMC X-12 Silver and Black

  • Cassette

    SunRace, 12-Speed, 11-51T, ED Black

  • Brake, Front

    Shimano MT420, 4-Piston Hydraulic Disc Brake, 203mm Rotor

  • Brake, Rear

    Shimano MT420, 4-Piston Hydraulic Disc Brake, 180mm Rotor

  • Brake Levers

    Shimano MT4100 Hydraulic Lever, I-Spec EV Compatible

  • Handlebar

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

  • Stem

    Marin 3D Forged Alloy, 35mm

  • Grips

    Marin Single Clamp Locking

  • Headset

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

  • Seatpost

    X-Fusion Manic, 1x Composite Remote, Size S 125mm Travel, Size M and L 150mm Travel, Size XL 175mm Travel, 30.9mm

  • Saddle

    Marin Speed Concept

  • Pedals

    -

  • Extras

    Bolt-On Thru-Axle

Specifications, pricing, and availability are subject to change without notice.

Geometry

Rift Zone 29 3 geometry diagram
S M L XL
Stack 602.6 607.15 611.7 616.25
Reach 430 455 480 505
Headtube Angle 65.5° 65.5° 65.5° 65.5°
Headtube Length 100 105 110 115
Seattube Angle 76° 76° 76° 76°
Seattube Length 390 400 425 430
Toptube Effective 580.24 606.36 632.51 658.6
BB Height 344 344 344 344
BB Drop 34 34 34 34
Chainstay 425 425 425 425
Wheelbase 1158.92 1186 1213 1240.1
Standover Height 691.84 697.1 717.83 721.97
Fork Offset 44 44 44 44
Seatpost Diameter 30.9 30.9 30.9 30.9
Handlebar Width 780 780 780 780
Stem Length 35 35 35 35
Crank Length 170 175 175 175

All lengths in millimeters

Suspension Setup

REAR SHOCK SET UP

Recommended Sag = 30%/15mm

Step 1: Set correct pressure in rear shock.

Step 2: Sit on the bike and cycle the suspension (*with correct riding gear).

Step 3: Reset O-ring and sit on the bike, DO NOT BOUNCE, carefully step off.

Step 4: Measure sag (from o-ring to seal of shock), If it does not match the bike’s recommended sag in millimeters repeat process.

Step 5: Adjust rebound setting to ensure proper control.

FORK SET UP

Marin recommends that all bikes front and rear suspension feel balanced

Step 1: After rear sag is set follow the recommended pressure from the fork manufacture.

Step 2: Bounce evenly up and down on the bike, cycling the suspension up and down to make sure both front and rear suspension feel balanced, if the front does not match the rear add or release pressure.

Step 3: Once the bike feels balanced adjust the rebound damping to ensure proper control.

Fox Float DPS

Rider weight and shock setup
LBS KG PSI
120 54 125
130 59 132
140 64 140
150 68 150
160 73 160
170 77 170
180 82 180
190 86 192
200 91 210
210 95 220
220 100 230
230 104 250
240 109 260
250 113 280
260 118 300
270 122 310

Reviews

The Rift Zone has long, low, and slack geometry. This makes the bike much more aggressive than a cross-country race bike while providing more stability at high speeds and more smiles through technical terrain.

— Mountain Bike Action, April 2021