Marin San Quentin 3Maximum Security Hardtail Aggressive trail riders who want a hardtail that can take a genuine beating on technical terrain have a great option here. The San Quentin 3 pairs a progressively slack headtube angle with a steep seat tube angle on a Series 3 6061 aluminum double-butted frame, giving you the descending confidence of an enduro bike and the pedaling efficiency of a proper hardtail. The low stand over, internal cable routing, and 12x148mm Boost thru-axle spacing tell you everything about where this bike was designed to go. A size-specific Tranz X dropper post comes stock, so you're not adding that cost after the fact. The build centers on a Marzocchi fork up front and a Shimano drivetrain with a wide-range cassette to keep you spinning on the climbs before the descents get rowdy. Marin's own aluminum double-wall rims are tubeless-compatible, so you can run lower pressures and fewer flats without retrofitting anything out of the box. At this tier, getting a frame this progressive with a dropper post already installed and tubeless-ready wheels is where the value is locked in. Features Series 3 6061 aluminum double-butted frame with internal cable routing, 12x148mm Boost thru-axle, 73mm threaded BB, and chainstay and downtube protection for aggressive trail riding Marzocchi fork with 150mm of travel tuned for a progressive, slack-geometry hardtail platform Shimano 12-speed drivetrain wide-range cassette keeps climbing manageable when the terrain gets steep Marin aluminum double-wall tubeless-compatible rims 29mm inner width, disc-specific, 32H, sleeved joint construction for durability and easy tubeless setup Tranz X dropper post 1x remote actuation, size-specific travel: S 125mm, M 150mm, L 170mm, XL 200mm, 30. 9mm diameter | Marin Bikes | San Quentin 3 Bike | Purple Fade | M 29