San Quentin 3 27.5 — product image 1 at Stretton Bikes

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Overview

About this bike

San Quentin 3 from Marin.

  • Series 3 6061 Aluminum, Double Butted Frame, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB
  • Marzocchi Bomber Z2, 110x15mm Boost Spacing, 140mm Travel, Kabolt Axle
  • FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2�
  • Marin 3D Forged Alloy, 35mm

Specifications

Frame
Series 3 6061 Aluminum, Double Butted Frame, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB

Why you'll love it

Series 3 6061 Aluminum, Double Butted Frame, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB

Marzocchi Bomber Z2, 110x15mm Boost Spacing, 140mm Travel, Kabolt Axle

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

Marin 3D Forged Alloy, 35mm

Who it's for

Ideal for 1

Mountain riding

Ideal for 2

Weekend trail rides and forest loops

Ideal for 3

Building skills at trail centres

Key technology & features

Frame

Aluminium

Groupset

Shimano Deore

Travel

140mm fork

Wheels

27.5"

Suspension

Hardtail

Feature

Marzocchi Bomber Z2, 110x15mm Boost Spacing, 140mm Travel, Kabolt Axle

Marin San Quentin 3 27.5 — riding on UK trails and lanes

Built to ride

Marin Mountain performance

Premium bikes, expert setup, and Midlands riding from Stretton Bikes in Ashby-de-la-Zouch.

Official Marin size guide for San Quentin 3 27.5

Size S
Rider height 155–168 cm
Size M
Rider height 165–178 cm
Size L
Rider height 175–188 cm
Size XL
Rider height 185–193 cm

Sizing

Find Your Perfect Size

Choosing the correct frame size makes a huge difference to comfort, confidence and performance. Enter your height below to see the official manufacturer recommendation.

Available sizes: M, L, XLColours: Purple Fade

Your height

140 cm210 cm

Recommended frame size

M and L

Suitable sizes

M and L

M (165–178 cm) — smaller size for a more playful, agile ride.

L (175–188 cm) — larger size for greater stability and confidence at speed.

Confidence

Between Sizes
View Full Geometry+

Reach, stack, seat tube, head angle, chainstay, wheelbase, BB drop, standover, effective top tube, and seat angle measurements.

Geometry details available on request.

Still unsure?

We build and size bikes every day. Call us, email us or visit our Ashby-de-la-Zouch showroom and we'll help you choose the perfect size.

Get Sizing Advice

Delivery & collection

Collection

Collect free from our Ashby-de-la-Zouch showroom. Bikes are fully inspected and safety-checked before handover.

Delivery

  • Free delivery on bikes over £1,000.
  • Bikes under £1,000: £60 delivery.
  • Delivery available to England and Wales only.

Why buy from Stretton Bikes

Authorised dealer for Mondraker, Basso and Marin
Showroom and workshop in Ashby-de-la-Zouch, serving the Midlands
Professional bike fitting and independent advice
Cycle to Work and finance enquiries handled personally
Every bike safety-checked before handover

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FAQs

This bike is available to order. Lead times vary by brand and size — we will confirm when you enquire.