Description
Marin San Quentin JR 20 Mountain Bike
The Marin San Quentin JR 20 brings the attitude of the full size San Quentin to younger riders who want a real mountain bike feel. Designed with input from Matt Jones, it blends dirt jump DNA with a tough all round trail setup. The Series 2 aluminium frame is strong and confidence inspiring, paired with a Manitou J Unit 80 mm air fork that offers proper adjustability for lighter riders. A microSHIFT Acolyte 8 speed drivetrain with clutch, kid specific hydraulic disc brakes and tubeless compatible wheels make the San Quentin JR 20 a capable and progression ready bike for young shredders.
Key Features
-
Series 2 aluminium frame
-
Manitou J Unit 80 mm air fork
-
microSHIFT Acolyte 8 speed drivetrain
-
Kid specific hydraulic disc brakes
-
20 inch wheels
-
2.4 inch Delium Versatile tyres
-
One piece saddle and seatpost
Strong Aluminium Frame
The Series 2 aluminium frame is built for young riders who want a real mountain bike feel. It uses a low standover height, disc specific design and internal routing. The frame is dropper post compatible and uses a 27.2 mm seatpost. A one piece saddle and post allow a lower ride height for smaller riders.
Manitou J Unit Suspension
The Manitou J Unit Sport fork provides 80 mm of air sprung travel with rebound adjustment. It is designed specifically for young riders, offering lighter spring rates and proper tuning. The 15 x 110 mm axle adds stiffness and control on rough terrain.
Acolyte Drivetrain And Hydraulic Brakes
The microSHIFT Acolyte 8 speed drivetrain uses a clutch derailleur for improved chain retention on rough ground. The short reach shifter is designed for smaller hands. Kid specific hydraulic disc brakes provide strong and predictable stopping power.
Durable Wheels And Grippy Tyres
Marin double wall rims, forged hubs and 2.4 inch Delium Versatile tyres create a tough and stable wheel setup. The tyres use a light construction for easier rolling and are tubeless compatible for improved grip and puncture protection.
Bike specifications are advised by the manufacturer and can be subject to change without prior warning.
Please call our helpful sales team on 01539 821 443 or email us for the latest up-to-date product information.


