The Sour Bicycles Bad Granny Pre-Order

As covered in our 2023 MADE Reportage, the Sour Bicycles Bad Granny rigid MTB frameset (1,099 € ) is up for grabs in a pre-order. Read on for all the details as the order window closure is approaching…

Bad Granny Quick Hits

1,099 € frame and fork
S-L sizing (geo below)
Headtube: 44mm, ZS44/EC44
Bottom bracket: 73mm BSA with eccentric shell for singlespeed
Rear spacing: 12mm x 148mm Boost, thru axle
Seatpost: 31.6mm
Rear brake: PM7″ disc
Fork travel: Rigid, but will accept 100mm – 120mm
Wheel sizes: 27.5″ or 29″
Tire clearance: 27.5 x 2.4″, 29 x 2.4″
Stealth dropper post cable routing
Second top tube for better power transfer (go fast)
Rigid fork with SAG-o-meter for comfort and precise steering (don’t crash)
Sram Transmission ready Dropouts (“UDH”)

A Proper Modern Do-It-All Klunker

Klunkers were the first mountain bikes, developed after the onset of Mountain Cruisers in Marin County. The Bad Granny was inspired by the ingenuity of these early tinkerers and mountain bike framebuilders. As such, it’s got all the bases covered. Belt drive? Cool. There is a split seat stay. Singlespeed? No worries. There’s an eccentric bottom bracket. SRAM Transmission? Got you. There’s a UDH-ready dropout design.

The Bad Granny can be whatever you want it to be.

Geometry

Sizes S/M through L/XL allow for the rider to achieve proper fit by adjusting stem length and bar rise. A 74º seat tube angle and 68º heat tube angle put the Bad Granny into a perfect “all-rounder/XC” geometrical sweet spot, making it at home on gravel roads and swoopy singletrack. Add a dropper to engage the fun.