Marin Bikes

Rift Zone Jr

2021 Marin Rift Zone Jr profile.

See this bike in a different color:
  • Suspension: X-Fusion Velvet RLC 26" / X-Fusion O2 Pro R
  • Wheel Size: 24"
  • Frame: Aluminum
  • Size Range: 26, One Size

REAL SINGLETRACK RIDING

KEEPING UP WITH THE PARENTS

FUN!

The Rift Zone 26 and Rift Zone Jr are for the ambitious kid looking to keep up with the adults and push the boundaries of the local bike park on a ride just as capable as its full size counterpart. Both models utilize the same frame and fork, so a Rift Zone Jr is easily upgradable to 26" wheels and longer cranks as your little ripper grows. 26" wheels and longer cranks not included, but your local Marin dealer can source the parts.

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Specifications

  • Frame

    Series 3 6061 Aluminum Frame, 24" Wheel with Clearance for 26", 120mm Travel, MultiTrac Suspension Platform, 135mm Open Dropout (Upgradeable to 142x12mm Thru-Axle), 73mm Threaded BB

  • Front Suspension

    X-Fusion Velvet RLC 26", 120mm Travel, Compression and Rebound Adjustment, 100x15mm Thru-Axle

  • Rear Suspension

    X-Fusion O2 Pro R, 190x51mm, Custom Tune, M8x22.2mm Hardware

  • Rims

    Marin, Double Wall Alloy, 27mm Inner, Pinned Joint, Disc Specific, Tubeless Compatible

  • Hub, Rear

    Forged Alloy, 135mm, Quad Sealed Bearings, 32H

  • Hub, Front

    Forged Alloy, 100x15mm, 32H

  • Spoke, Nipples

    14g Stainless Steel

  • Tires

    Vee Tire Co, Flow Snap 24”x2.4", Tackee Compound, Wire Bead

  • Derailleur, Rear

    Shimano Deore, 11 Speed, SGS

  • Derailleur, Front

    -

  • Shift Lever

    Micro Shift, SLM895, 11-Speed

  • Crankset

    Marin Forged Alloy 1x11, Hollow Spindle, Steel Narrow Wide 32T Chainring, Direct Mount Type

  • Bottom Bracket

    External Sealed Cartridge Bearings

  • Chain

    KMC X-11 Silver and Black

  • Cassette

    SunRace 11-Speed, 11-46T

  • Brake, Front

    Shimano MT-201 Hydraulic Disc, 180mm Rotor

  • Brake, Rear

    Shimano MT-201 Hydraulic Disc, 160mm Rotor

  • Brake Levers

    Shimano BL-MT201 Hydraulic

  • Handlebar

    Marin Mini-Riser, 6061 Double Butted Aluminum, 15mm Rise, 720mm Width, 4º Up, 9º Back

  • Stem

    Marin 3D Forged Alloy, 35mm

  • Grips

    Marin Dual Density

  • Headset

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

  • Seatpost

    Marin Alloy, 30.9mm

  • Saddle

    Marin Speed Concept

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

Geometry

Rift Zone Jr geometry diagram
ONE SIZE
Stack 536.24
Reach 380
Headtube Angle 67.5°
Headtube Length 105
Seattube Angle 69°
Seattube Length 335
Toptube Effective 536
BB Height 305
BB Drop 10
Chainstay 428.5
Wheelbase 1018
Standover Height 621
Fork Offset 42
Seatpost Diameter 30.9
Handlebar Width 720
Stem Length 45
Crank Length 152

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.

X-Fusion O2 Pro R

Rider weight and shock setup
LBS KG PSI
80 36 34
90 41 42
100 45 50
110 50 58
120 54 58
130 59 74
140 64 82
150 68 90

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