Inverted forks simply work better. By inverting the fork so that the lighter stanchions are on the bottom reduces the mass of the moving part of the fork. This allows for a very responsive suspension. Inverting also anchors the stanchions into the stronger, larger upper tubes and crown-making the overall chassis much stronger and stiffer. Inverting lowers the fulcrum point where the uppers join the stanchions, compared to other fork designs, decreasing the leverage factor. Inverting also positions the seals downward so that all kinds of bad stuff doesn’t sit on them and get pulled into your fork. A strong, stiff, quickly moving fork is especially important for fat bikes where the size and weight of the tires put increased pressure on the fork.
Wren Inverted Fat Bike Suspension Fork
Travel: 110mm (adjustable to 80mm)
Hub Spacing: 150mm
Axle to Crown: 530mm
Tire Size: 5.0″. Please refer to the tire size chart.
Wheel Size*: 26″ and 27.5″ Fat. 29″ Midfat. Please refer to the wheel size chart.
Steerer: 7050 Alloy Tapered – 1.125″ ~ 1.5″
Crown: 6066T6 Alloy 3D forged
Stanchions: 7050 Alloy hard anodized, 36mm
Uppers: 7050 Alloy hard anodized, 43mm
Axle: 15mm Bolt-On Conical (dual M8 Boltheads)
Brake: PM6 post-mount, direct mount for a 160 mm rotor. Use adapters for 180 mm or 203 mm rotors
Damper: All-Weather, sealed oil cartridge, adjustable rebound, and compression with true lockout.
Air spring: TwinAir System, fully adjustable.
110mm Travel – 2151 g / 4.7 lb