The Surge is a great all round frame for anyone who likes to go hard in all kinds of conditions. Perfect for hardtail new school hucking, shore riding, yet at the same time comfortable on longer rides and great for dirt jumping. We believe that steel is the best material for this kind of frame giving the bike a great feel and making it absolutely bombproof.

The Surge features the elegant adjustable vertical dropouts. Thanks to this, it is now possible to run this frame single speed or with derailleur. The Surge is available in 2 sizes – M and L and will work correctly with 120 – 160 mm forks and 26” wheels.

Specs:

-material: custom butted 4130 cromoly
-recommended fork travel: 120-160mm
-top tube (physical c-c): M: 572 mm / 22.5”,  L: 585 mm / 23”
-chain stays: sliding dropouts adjustable 411-423 mm / 16.2-16.7”
-frame size: M 381mm / 15” (fit’s like 16.5” MTB), L 405mm / 16” (fit's like 17.5” MTB)
-headset: standard press-fit 1.125” (1-1/8” A-head)
-head tube stack: 110mm / 4.3”
-bb: euro bb 73mm with ISCG-05 mounts
-biggest chainring: up to ~38t
-mtb hub spacing (O.L.D 135 x 10mm)
-disk brake mount IS (International Standard), max rotor size: up to 185mm
-max tyre size: 26”x2.6”
-for 27.2mm seat post / 29.8mm seat post clamp included with frame
-weight: ~2.73kg (M size)
-colours: black, white

Geometry with 545 mm axle to crown fork (~160mm travel)

-top tube length horizontal: M: 596mm / 23.5”, L: 615mm / 24.2”
-stand over (measured in the middle of the top tube): M: 796mm / 31.3” ,L: 806mm / 31.8”
-head tube angle: M & L: 66°
-seat tube angle: M & L 70°
-bb height: M & L: +3mm
-wheel base min: M: 1095mm / 43.1”, L: 1119mm / 44”