Marin Bikes

Rift Zone Jr 24"

2023 Rift Zone JR 24 Color

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: 24, One Size

REAL SINGLETRACK RIDING

KEEPING UP WITH THE PARENTS

FUN!

Because young rippers need that Rifty Love too! Our take on the ultimate do-it-all trail bike, bringing big-bike performance for younger riders.

The Marin Rift Zone Jr is made to party, just like the full-sized Rifty. It has 24" wheels that are a little smaller than our full-sized bikes, making it the perfect gateway ride for tweeny riders. And just like the 'grown up' Rift Zone, it has 130mm rear travel, a lightweight aluminum frame and our super-plush MultiTrac suspension platform for endless good times on the trails.

And best of all, the Rift Zone Jr can grow with your child. Got another little shredder on the way? The Rift Zone Jr shares the same frame, fork and shock as the Rift Zone 26". Simply swap the wheels to 26" and longer cranks as your child outgrows the Jr.

Jump to…

Specifications

  • Frame

    Series 3 6061 Aluminum, 24” Wheels (fits up to 26"), 130mm Travel, MultiTrac Suspension Platform, 148x12mm Boost Thru-Axle, 73mm Threaded BB w/ ISCG05 Tabs

  • Front Suspension

    X-Fusion Velvet RLC 26", 130mm Travel, Compression and Rebound Adjustment, 100x15mm Thru-Axle

  • Rear Suspension

    X-Fusion O2 Pro R, 190x45mm, Custom Tune, M8x25mm Hardware

  • Rims

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

  • Hub, Rear

    Forged Alloy, 141mm, Quad Sealed Bearings, Centerlock Disc, 32H

  • Hub, Front

    Forged Alloy, 100x15mm, Centerlock Disc, 32H

  • Spoke, Nipples

    14g Stainless Steel

  • Tires

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

  • Derailleur, Rear

    Shimano Deore, 11-Speed, SGS

  • Derailleur, Front

    -

  • Shift Lever

    Shimano Deore, 11-Speed, SL-5100R

  • 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, 11-51T, ED Black

  • Brake, Front

    Tektro HDM-280 Hydraulic Disc, 180mm Rotor

  • Brake, Rear

    Tektro HDM-280 Hydraulic Disc, 160mm Rotor

  • Brake Levers

    Tektro HDM-280

  • 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 24" geometry diagram
ONE SIZE
Stack 537.57
Reach 380
Headtube Angle 65.5°
Headtube Length 95
Seattube Angle 76°
Seattube Length 315
Toptube Effective 515.17
BB Height 308.5
BB Drop 10
Chainstay 425
Wheelbase 1089
Standover Height 614
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
40 18 40
50 23 50
60 27 60
70 32 70
80 36 80
90 41 90
100 45 100
110 50 110
120 54 120

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