2025 Marin San Quentin 1

Archived: 2025 Marin San Quentin 1 · Mountain · Published sizes: S; M; L; XL

• Confirm the frame markings and seller description match this archived model. Note every component that differs from the published build.
• Record the frame serial number. It should be legible, unaltered and consistent with the seller’s ownership history.
• Find the size marking on the bicycle and confirm the fit before judging the condition or price.

Archived: Frame: Series 2 6061 Aluminum 27.5 or 29" Wheel, Double Butted, Internal Cable Routing, 141mm Open Dropout, 73mm Threaded BB · Fork: SR Suntour XCM34 Boost 15x110mm Spacing, 130mm Travel, Coil Spring, 27.5", Bolt-On Thru-Axle

• Look for dents or shape changes and inspect the edges of welds around the head tube, bottom bracket, seat cluster and suspension mounts for hairline cracks.
• Stand behind and in front of the bicycle to look for obvious frame, fork or wheel misalignment. Ask directly about crashes, transport damage and repairs.

Archived: Fork: SR Suntour XCM34 Boost 15x110mm Spacing, 130mm Travel, Coil Spring, 27.5", Bolt-On Thru-Axle

• Inspect the fork stanchions for scratches or coating wear, look for oil or dirt rings at the seals, and cycle the fork through its travel while checking for binding or bushing play.
• Ask for dated fork-service records. A clean exterior does not establish the condition of internal seals, oil or bushings.

Archived: Shifters: MicroShift SL-M6195-R, 1x9 with Bearings · Rear derailleur: MicroShift RD-M9195M, 9 Speed, With Clutch · Crankset: Marin Forged Alloy, Integrated Steel 32t Narrow Wide Changing, Boost Spacing · Bottom bracket: Sealed Cartridge Bearing, Square Taper · Cassette: SunRace, 9 Speed, 11-46T · Chain: KMC X-9

• Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
• Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
• Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Archived: Brakes: (F) Tektro M275 Hydraulic, 180mm Rotor / (R) Tektro M275 Hydraulic, 180mm Rotor; Levers: Tektro M275

• Squeeze each lever firmly. It should feel consistent and return cleanly. Check levers, hoses and calipers for fluid, inspect pad thickness and contamination, and examine rotors for wear or bending.
• Before riding, test the front and rear brakes separately at walking speed. Each should stop firmly and release cleanly without the lever reaching the handlebar.

Archived: Wheel size: 27.5"; 29" · Rims: Marin Aluminum Double Wall, Specific, 29mm Inner, Pinned Joint, 32H, Tubeless Compatible · Hubs: (F) Forged Alloy, 110x15mm, Sealed Cartridge Bearing, 32H / (R) Forged Alloy, Quad Sealed Cartridge Bearings, Alloy Axle, QR type, 141mm Width, 32H, Shimano Standard Freehub Body · Front tire: Delium Vesatile, All-Around Construction, 2.5", Wire-Bead Tubeless · Rear tire: Delium Vesatile, All-Around Construction, 2.5", Wire-Bead Tubeless

• Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
• Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance. This record indicates different front and rear wheel diameters, so verify each tire at its correct end.
• Remove and reinstall or closely inspect both wheel-retention systems. Axles or quick releases should tighten correctly with undamaged threads, hardware and dropouts.
• Confirm whether the bike is actually set up tubeless, whether both tires hold pressure, and when sealant and rim tape were last serviced.

Archived: Headset: FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2” · Handlebar: Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back · Stem: Marin 3D Forged Alloy, 45mm · Seatpost: Marin Alloy, 30.9mm · Saddle: Marin Speed Concept · Pedals: Marin MTB Plastic

• Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
• Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

• Before riding, confirm both wheels are secure, tires are safe, both brakes function, and the headset, handlebar, stem, cranks and pedals have no looseness.
• Begin at low speed. Test steering, braking and shifting progressively, then load the drivetrain and suspension only after the basic safety checks pass.
• Listen and feel for repeated knocks, grinding, skipping, brake pulsation or movement at joints. Stop the test if the bicycle cannot be controlled safely.