Skip to content
Free Delivery Over £60 | 90-Day Returns | Independent & Rider-Owned Since 2008
Coming soon
  • Marin San Quentin 3 29 2026
  • Marin San Quentin 3 29 2026

The San Quentin 3 27.5 is the top-spec version of Marin's hardcore hardtail, made for aggressive trail riders who want a blend of singletrack ability and extended air time. It brings a Marzocchi Bomber Z2 fork, Shimano Deore 12-speed and TRP 4-piston brakes to a tough, playful frame.

The Series 3 double-butted aluminium frame has internal cable routing and a Boost 148x12mm thru-axle for added stiffness. Its style takes cues from Marin's Alcatraz dirt jump bike, with plenty of standover, slick frame tubes and a striking paint job. Modern trail geometry pairs a slack head angle with a steep seat angle, putting your weight between the wheels for efficient climbing while the slack front end and short rear centre pull you through rough descents and corners with an intuitive feel.

The 140mm Marzocchi Bomber Z2 fork is a big step up in control, Shimano Deore 12-speed with an 11-51T cassette gives a huge gear range, and TRP Slate EVO 4-piston brakes with a 203mm front rotor bring serious stopping power. Maxxis Assegai tyres on wide 29mm rims and a TranzX dropper complete the build.

The San Quentin 3 27.5 is available in sizes S and M. For sizes M, L and XL, see the 29" version here.

Features

  • Series 3 6061 double-butted aluminium frame with internal routing
  • Boost 148x12mm rear thru-axle
  • Dirt jump-inspired styling with modern trail geometry
  • Marzocchi Bomber Z2 fork with 140mm travel
  • Shimano Deore 12-speed with 11-51T cassette
  • TRP Slate EVO 4-piston brakes with 203mm front and 180mm rear rotors
  • Maxxis Assegai 27.5x2.5" tyres on 29mm rims
  • TranzX dropper post

Sizing

  • S: 5'2" - 5'5"
  • M: 5'5" - 5'8"

Specifications

  • San Quentin 3 27.5
  • DisciplineTrail

  • MaterialAluminium

  • Front Travel140mm

  • Rear TravelHardtail

  • Wheel Size27.5"

  • Warranty5 Years (frame)

Frame - All-new Series 3 6061 aluminium, double butted, internal cable routing, 12x148mm thru-axle, 73mm threaded BB
Fork - Marzocchi Bomber Z2, 110x15mm Boost, 140mm travel, Kabolt axle
Rims - Marin aluminium double wall, 29mm inner, sleeved joint, 32H, tubeless compatible
Front hub - Shimano TC500, 110x15mm, disc
Rear hub - Shimano TC500, 148x12mm, Micro Spline freehub body, Centerlock, 32H
Spokes - 14g black stainless steel
Tyres - Maxxis Assegai, 27.5x2.5", MaxxTerra, EXO, tubeless compatible
Rear derailleur - Shimano Deore, 12-speed, SGS
Shift lever - Shimano Deore, 12-speed
Crankset - FSA Comet, modular 1x, 32T direct mount chainring, MegaTooth, Boost spacing
Bottom bracket - FSA MegaExo 73mm BSA
Chain - KMC X12
Cassette - SunRace 12-speed, 11-51T
Front brake - TRP Slate EVO, 4-piston hydraulic, resin pads, 203mm rotor
Rear brake - TRP Slate EVO, 4-piston hydraulic, resin pads, 180mm rotor
Brake levers - TRP Slate EVO, I-Spec EV compatible
Handlebar - Marin Mini-Riser, 6061 double butted aluminium, 780mm width, 28mm rise, 5° up, 9° back
Stem - Marin 3D forged alloy, 35mm
Grips - Marin Grizzly lock-on
Headset - FSA No.57E, semi-sealed cartridge bearings, 1 1/8" x 1 1/2"
Seatpost - TranzX YSP23JL dropper, 1x remote, 30.9mm, 125mm (S), 150mm (M)
Saddle - Marin Speed Concept
Pedals - Nylon platform

Marin San Quentin 3 27.5 2027

San Quentin 3 27.5 2027

  • Trail
  • Hardtail · 140mm fork
  • Alloy frame
SKU: 740687001
The San Quentin 3 27.5 is the top-spec version of Marin's hardcore hardtail, made for aggressive trail riders who want a blend of singletrack ability and extended air time. It Read more
Regular price £1,699
Colour

Size
Out of stock

90 Day Returns

£1699.0
Finance is subject to status. Terms and conditions apply.

The San Quentin 3 27.5 is the top-spec version of Marin's hardcore hardtail, made for aggressive trail riders who want a blend of singletrack ability and extended air time. It brings a Marzocchi Bomber Z2 fork, Shimano Deore 12-speed and TRP 4-piston brakes to a tough, playful frame.

The Series 3 double-butted aluminium frame has internal cable routing and a Boost 148x12mm thru-axle for added stiffness. Its style takes cues from Marin's Alcatraz dirt jump bike, with plenty of standover, slick frame tubes and a striking paint job. Modern trail geometry pairs a slack head angle with a steep seat angle, putting your weight between the wheels for efficient climbing while the slack front end and short rear centre pull you through rough descents and corners with an intuitive feel.

The 140mm Marzocchi Bomber Z2 fork is a big step up in control, Shimano Deore 12-speed with an 11-51T cassette gives a huge gear range, and TRP Slate EVO 4-piston brakes with a 203mm front rotor bring serious stopping power. Maxxis Assegai tyres on wide 29mm rims and a TranzX dropper complete the build.

The San Quentin 3 27.5 is available in sizes S and M. For sizes M, L and XL, see the 29" version here.

Features

  • Series 3 6061 double-butted aluminium frame with internal routing
  • Boost 148x12mm rear thru-axle
  • Dirt jump-inspired styling with modern trail geometry
  • Marzocchi Bomber Z2 fork with 140mm travel
  • Shimano Deore 12-speed with 11-51T cassette
  • TRP Slate EVO 4-piston brakes with 203mm front and 180mm rear rotors
  • Maxxis Assegai 27.5x2.5" tyres on 29mm rims
  • TranzX dropper post

Sizing

  • S: 5'2" - 5'5"
  • M: 5'5" - 5'8"

Specifications

  • San Quentin 3 27.5
  • DisciplineTrail

  • MaterialAluminium

  • Front Travel140mm

  • Rear TravelHardtail

  • Wheel Size27.5"

  • Warranty5 Years (frame)

Frame - All-new Series 3 6061 aluminium, double butted, internal cable routing, 12x148mm thru-axle, 73mm threaded BB
Fork - Marzocchi Bomber Z2, 110x15mm Boost, 140mm travel, Kabolt axle
Rims - Marin aluminium double wall, 29mm inner, sleeved joint, 32H, tubeless compatible
Front hub - Shimano TC500, 110x15mm, disc
Rear hub - Shimano TC500, 148x12mm, Micro Spline freehub body, Centerlock, 32H
Spokes - 14g black stainless steel
Tyres - Maxxis Assegai, 27.5x2.5", MaxxTerra, EXO, tubeless compatible
Rear derailleur - Shimano Deore, 12-speed, SGS
Shift lever - Shimano Deore, 12-speed
Crankset - FSA Comet, modular 1x, 32T direct mount chainring, MegaTooth, Boost spacing
Bottom bracket - FSA MegaExo 73mm BSA
Chain - KMC X12
Cassette - SunRace 12-speed, 11-51T
Front brake - TRP Slate EVO, 4-piston hydraulic, resin pads, 203mm rotor
Rear brake - TRP Slate EVO, 4-piston hydraulic, resin pads, 180mm rotor
Brake levers - TRP Slate EVO, I-Spec EV compatible
Handlebar - Marin Mini-Riser, 6061 double butted aluminium, 780mm width, 28mm rise, 5° up, 9° back
Stem - Marin 3D forged alloy, 35mm
Grips - Marin Grizzly lock-on
Headset - FSA No.57E, semi-sealed cartridge bearings, 1 1/8" x 1 1/2"
Seatpost - TranzX YSP23JL dropper, 1x remote, 30.9mm, 125mm (S), 150mm (M)
Saddle - Marin Speed Concept
Pedals - Nylon platform

Reviews

This bike hasn't been reviewed yet. Biketart is rated a Top Quality Store by Google, and our team of riders is happy to answer any questions before you buy.

Talk to a rider

You may also like

Recently Viewed