Lowside

Surly Lowside – Blue Monday
Your BMX, all grown up.

The Lowside taps straight into that carefree, ride-anywhere energy. It’s just as happy ripping singletrack and pumptracks as it is leaning outside your go-to spot. Simple, tough, and ridiculously fun.

At its core, this is a proper singlespeed mountain bike. No fuss, no distractions, just you, the trail, and a bike that begs to be pushed. It carries on the legacy of Surly’s original 1x1 Rat Ride, built for riders who like things raw, direct, and a little rowdy.

Modern touches like dropper post compatibility, thru-axles, and Gnot-Boost spacing keep it current, while the steel frame keeps that classic Surly feel.

Some call it a trail bike. Some call it a pub cruiser. Either way, it’s a good time.

Highlights

• Singlespeed mountain bike simplicity
• 4130 Chromoly frame and fork
• Dropper post compatible
• Gnot-Boost rear spacing for flexible setups
• Runs 27.5 x 2.8" or 26 x 3.0" tires
• Built to mix modern standards with parts-bin freedom

Key Specs

Frame & Fork
4130 Chromoly, double-butted main triangle
Rigid Chromoly fork

Drivetrain
Singlespeed setup
SRAM NX Eagle crankset, 32T
Surly 17T rear cog

Brakes
Tektro hydraulic disc brakes
160mm rotors front and rear

Wheels & Tires
WTB ST i35 rims
Novatec hubs
Maxxis Rekon+ 27.5 x 2.8” tires (tubeless ready, tan wall)

Cockpit
Surly Sunset handlebar (color matched)
Sunday Freeze stem
WTB Volt saddle

Weight
Approx. 28 lb (Medium)

Built for riders who don’t need gears to have a good time.