Marin San Quentin 1 29" Hardtail Mountain Bike - 2025

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4001987
  • 29” Series 2 Aluminium Double butted frame
  • SR Suntour XCM34 130mm Fork
  • Tektro M275 hydraulic disc brakes
£849.00
Excl. Tax: £707.50
Stock Status:
Configure your product to see availability.

Built with care: Our mechanics fully assemble your bike before it's carefully packaged and shipped to you.

At Tweeks Cycles, we ensure your bike arrives fully assembled and, most importantly, well packaged so it arrives with you as it left us.

Upon delivery, simply unpack it, attach any included pedals (believe it or not, some bikes don’t come with pedals!), adjust the handlebars, and you're ready to ride!

It’s all super simple!

BUT! Please take extra care when fitting any pedals that are provided with your bike. Pedals are side specific and MUST be fitted to the correct side of the bike. They are usually clearly labelled Left and Right. Failure to do so will permanently damage the bike, void the bikes warranty and lead to many tantrums, for children or grown children alike!

Comprehensive 14-Point Inspection

Each bike undergoes a meticulous 14-point inspection to guarantee optimal condition and performance:

  • Ensure Cycle is free of any mechanical damage, paint chips or missing parts
  • Grease seat tube, secure seat clamp, make sure the saddle is level and ensure all fixings are secure
  • Ensure handlebar, stem and brake/gear levers are secured
  • Assess headset for play or tightness
  • Ensure handlebar tape or grips are fitted securely
  • Ensure wheel nuts, quick-release levers or through axles are tightened (please note: some adult mountain bikes come with the front wheel removed for transport), true the wheels for optimal alignment and check wheel bearings for proper adjustment
  • Inflate tyres to the correct pressure
  • Ensure front and rear brakes operate correctly. Bleed hydraulic brakes if required
  • Ensure pedal threads are greased
  • Test all gears to ensure smooth operation
  • Check suspension system for correct operation and ensure bolts are tight (if required)
  • Ensure smooth bottom bracket rotation with no free play and secure crank bolts
  • Check cable/house routing and that cable ends are fitted
  • Install reflectors and bell

This thorough process ensures your bike is in peak condition upon arrival. We do not fit mudguards or other accessories prior to shipping as these are likely to be damaged in transit.

Note on Electric Bikes

Due to shipping restrictions, in some circumstances you may receive your new electric bike and its battery separately. This is due to carriage restrictions on some removable batteries.

Note on Balance Bikes

Balance bikes are shipped unassembled, allowing you to enjoy the building experience and retain the original packaging-perfect for gifting.

Details

The Marin San Quentin 1 29" Hardtail Mountain Bike - 2025 is built to perform with confidence and precision. Featuring an SR Suntour XCM34 suspension fork with 130mm of travel, it delivers smooth handling over rugged trails. Durable Vee Tire Co. Flow Snap tyres provide excellent grip for all-terrain adventures. Packed with premium components at an unbeatable price, this bike ensures you get the most out of every ride.

Key Features and Benefits:

  • Series 2 6061 Aluminium Frame: Double-butted for strength and lightweight design. Internal cable routing keeps the bike clean and efficient, perfect for tackling rough terrains with ease.
  • SR Suntour XCM34 Suspension Fork: 130mm of travel with coil spring technology absorbs shocks for a smoother ride. Enhances control and comfort on technical trails.
  • Vee Tire Co. Flow Snap Tyres: 2.6” width with MPC compound grips the ground securely. Confidently handles a range of terrains, from mud to loose gravel.
  • Marin Aluminium Double Wall Rims: Tubeless-compatible rims ensure durability and lower rolling resistance. Delivers a smoother and faster ride on the trail.
  • Tektro M275 Hydraulic Disc Brakes: Provides reliable stopping power in all weather conditions. Ride with confidence on steep descents and tight turns.
  • MicroSHIFT 1x9 Drivetrain: A simple, reliable gear setup with a clutch rear derailleur. Reduces chain slap for a quieter and more efficient ride.
  • Marin Forged Alloy Crankset: Boost spacing and narrow-wide chainring ensure consistent chain retention. Designed for efficient pedalling and minimal maintenance.
  • Wide Marin Mini-Riser Handlebar: 780mm width offers excellent control and stability. Perfect for aggressive trail riding and steep climbs.

The Marin San Quentin 1 delivers the versatility and performance riders seek in a hardtail mountain bike. Whether you’re navigating rocky descents or cruising through singletrack, its thoughtfully designed features and components guarantee an exceptional ride. Built for durability, comfort, and handling, it’s ideal for riders ready to push their limits.

Get ready to own the trails with a mountain bike that offers unbeatable performance and value. With standout features at an accessible price, the Marin San Quentin 1 is ready to hit the trails when you are.

Size - Rider height range:

  • S: 5'2" to 5'6"
  • M: 5'6" to 5'10"
  • L: 5'10" to 6'2"
  • XL: 6'2" to 6'5"


Specification

FrameSeries 2 6061 Aluminum, Double Butted Frame, Internal Cable Routing, 141mm Open Dropout, 73mm Threaded BB
Front SuspensionSR Suntour XCM34 Boost 15x110mm Spacing, 130mm Travel, Coil Spring, 27.5", Bolt-On Thru-Axle
RimsMarin Aluminum Double Wall, Disc Specific, 29mm Inner, Pinned Joint, 32H, Tubeless Compatible
Hub, RearForged Alloy, Quad Sealed Cartridge Bearings, Alloy Axle, QR type, 141mm Width, Disc, 32H, Shimano Standard Freehub Body
Hub, FrontForged Alloy, 110x15mm, Sealed Cartridge Bearing, Disc, 32H
Spoke, Nipples14g Black Stainless Steel
TiresVee Tire Co., Flow Snap, 27.5x2.6", MPC Compound, Wire Bead
Derailleur, RearmicroSHIFT RD-M9195M, 9 Speed, With Clutch
Shift LevermicroSHIFT SL-M9195-R, 1x9 with Bearings
CranksetMarin Forged Alloy, Integrated Steel 32T Narrow Wide Chainring, Boost Spacing
Bottom BracketSealed Cartridge Bearing, Square Taper
ChainKMC X-9
CassetteSunRace, 9 Speed, 11-46T
Brake, FrontTektro M275 Hydraulic Disc, 180mm Rotor
Brake, RearTektro M275 Hydraulic Disc, 180mm Rotor
Brake LeversTektro M275 Hydraulic
HandlebarMarin Mini-Riser, 6061 Double Butted Aluminium, 780mm Width, 28mm Rise, 5º Up, 9º Back
StemMarin Alloy, 45mm
GripsMarin MTN, Closed End
HeadsetFSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
SeatpostMarin Alloy, 30.9mm
SaddleMarin Speed Concept
PedalsMarin Oso OE Flat

Colour Grey / Black, Tan / Black
Size L, M, XL

Brand Marin Bikes
MPN(s) 739085001, 739085002, 739085003, 739087001, 739087002, 739087003

Customer Reviews
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Finance

Our Payment Options

Maestro Mastercard Visa PayPal V12 Retail Finance Clearpay

Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.

Finance Options

In order to get the kit you want, when you need it, we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.

D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance, Klarna and Clearpay. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Klarna is unregulated credit. Clearpay is unregulated credit, use responsibly, T&Cs & late fees apply.

Our Finance Providers

Delivery & Returns

UK Mainland Delivery Prices

Delivery Type Cost Estimated Delivery Time
Standard Delivery for orders under £49.99 from £1.33 2-3 working days from day of despatch(Excludes weekends and Bank Holidays)
Standard Delivery for orders over £49.99 Free
Bike Delivery Free 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays)
Express Delivery from £1.68 1-2 working days from day of despatch(Excludes weekends and Bank Holidays)
Special Delivery from £12.54 For any next working day delivery order before 4.30pm Monday to Thursday.
For any weekend delivery order before 4.30pm Friday

* Bike Delivery Info

A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.

For international shipping please visit our delivery page.

For information about returning an item please visit our returns page.