The Sour Purple Haze White Green Gloss Small is the go-anywhere, do-anything big gravel bike of your dreams. Its 55mm knobby tire clearance allows for endless adventures and its agile geometry and all-day comfort make it a staple for all types of gravel riding. Our Purple Haze has traveled the world, making us green with envy as we watch adventurous Sour-riders take it on all sorts of journeys. This frame is equal parts speedy and relaxed, like a trusty friend always sticking by your side.

 

All of this, built by hand in Saxony!

Adventures big or small, the Purple Haze is ready to roll.

We adore the Sour Purple Haze. This bike was among the first three we created when Sour was still a skunkworks. And let's be real - the Purple Haze has been perfect since day one. Of course, we've tweaked and tinkered with it over time. These days, the bike boasts a yoke for better support of its obsession with big tires. But its essence - the geometry and spirit - remains true to its first glorious ride.

 

Headtube: 44 mm upper and lower
Bottom bracket: 68mm T47 threaded bottom bracket
Axle: 12mm x 142mm thru axle
Seat post: 27.2mm
Brake standard: FM160 Direct. More info here.
Wheel size: Size XS/S 650B ooptimized (bb height), M – XXL fit 700C/29“
Tire clearance: Up to 55mm
Tubing: Custom drawn, multiple butted, partly heat treated SOUR CrMo (we love steel)
UDH/Transmission Compatible

Bonus facts and features:

• Fender and rack mounts
• Recommended tire size 45mm – 55mm
• Two water bottle mounts inside frame, a third bottle mount under downtube
• External cable routing on the downtube for mechanical drivetrains
• Internal brake hose routing
• 27,2mm seatpost diameter for maximum comfort