Marin SAN Quentin JR 24

2025 YouthMountain youth Manufacturer page

Last known price: $1,299

Prices shown first for United States
Fork travel: 100 mm
Wheels: 24″
Drivetrain: 1 × 9 30t / 11–46t
Gear range: 418%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

13 of 22 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Series 2 6061 Aluminum, 24” Wheels, Disc Specific, 27.2 Post and Dropper Compatible Not identified

Suspension

1 part

Fork
- Manitou

Drivetrain

6 parts

Bottom bracket

Sealed Cartridge Bearings, Square Taper Not identified
Cassette
- Shimano 11–46t
CS-LG3000
Chain
- KMC XGlide 11 speeds
Crankset

Forged Alloy, Narrow Wide 30T, 140mm Not identified
Rear derailleur
- Shimano Cues RD-U4000 9 speeds
RD-U4000
Shifters
- Shimano Cues SL-U4000
SL-U4000

Brakes

2 parts

Brake levers
- Shimano
Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

5 parts

Front hub

Forged Aluminum, 32H, Disc Specific Not identified
Rear hub

Forged Aluminum, 32H, Disc Specific Not identified
Rims
- Marin
Spokes

14g Stainless Steel Not identified
Tires

Delium Versatile, 24”x2.4”, Light Construction, Wire Bead, Tubeless Compatible Not identified

Cockpit and contact points

7 parts

Grips
- Marin
Handlebar
- Marin
Headset
- FSA NO.57E
Pedals

Kids Specific Nylon Pedal Not identified
Saddle
- Marin
Seatpost

Integrated With Saddle Not identified
Stem
- Marin

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size One

Table

Reach 345mm

Stack 510mm

Wheelbase 1009mm

Head angle 65.0°

Seat angle 75.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 24″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	345
Stackmm	510
Top tube lengthmm	481
Seat tube lengthmm	290
Head tube lengthmm	90
Head tube angle	65°
Seat tube angle	75°
Chainstay lengthmm	380
Wheelbasemm	1009
Front centermm	631
Bottom bracket dropmm	30
Bottom bracket heightmm	292
Standover heightmm	574
Fork rakemm	42
Stack/reach ratio	1.48
Suspension and parts
Crank lengthmm	140
Handlebar widthmm	580
Stem lengthmm	35

Not published by the manufacturer: Trail, Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 15.7 in
Highest gear: 65.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 24″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

15.7 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Highest gear

65.5 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Shifting

Mechanical

10 of 367 bicycles with this information use electronic shifting.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 367 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.0 km/h
Highest gear: 25.1 km/h

Total gear range 418%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 15.7–65.5 gear inches
Class reference (p10–p90): 14.0–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2025
Lowest gear: 257 bicycles with this information, 70.0% of the class
Highest gear: 257 bicycles with this information, 70.0% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds

Differences across 2025 builds
Specification	This bicycle Marin SAN Quentin JR 24	Marin San Quentin 1	Marin San Quentin 20"	Marin San Quentin 2	Marin San Quentin 24"	Marin San Quentin 27.5" 2
Suspension
Front travel	100 mm	130 mm	80 mm	140 mm	100 mm	140 mm
Drivetrain
Smallest chainring	30	32	30	32	30	32
Largest chainring	30	32	30	32	30	32
Rear sprockets	9	9	8	11	9	11
Largest sprocket	46	46	38	50	46	51
Lowest gear	15.7 in	20.2 in	15.8 in	17.6 in	15.7 in	17.3 in
Highest gear	65.5 in	84.4 in	54.6 in	80.0 in	65.5 in	80.0 in
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Fork spring	Air	Coil	Air	Air	Air	Coil
Tire width	2.4″	2.6″	2.6″	2.5″	2.4″	2.6″
Wheel size	24″	27.5″ / 29″	20″	27.5″	24″	27.5″
Bottom bracket standard	Not informed	BSA	Not informed	BSA	Not informed	BSA