Surge Evo

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Product info

The Surge is a great all round frame for anyone who likes to go hard in all kinds of conditions. It's a pure freeride hardtail with a slack head angle and lower bottom bracket. Perfect for new school freeride, 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. It will work correctly with 120 – 160 mm forks and 650B or 26” wheels.

Surge Evo compatible with a 30.9 seat post which means you can fit your favourite dropper post easily. 

NEW FOR 2017: improoved internal routing with rubber grommets.

Technical specification

Material: custom butted 4130 cromoly

Recommended fork travel: 120-160mm

Head tube: integrated tapered IS42/IS52, head tube length: 120mm / 4.7”

Fits forks: fits forks with standard 1-1/8” or tapered 1.5 1-1/8” steerer tubes

BB: threaded 73mm with ISCG-05 mounts

Biggest chainring: up to ~36t

MTB hub spacing: 135x10

Disc brake: disc brake mount IS (International Standard), max rotor size: up to 185mm

Max tyre size: 26”x2.6” or 27.5”x2.4”

Front derailleurs: top pull, dia. 34.9. High clamp only.

Seat post: 30.9 / seat clamp: 34.9

Cable routing: stealth cable route with rubber grommets in seat tube for dropper post

Weight: ~2.73kg (M size)


Surge Evo   M L
Wheel size 26"/27,5"  
Based on fork travel 160,0 160,0
Reach mm 387,0 409,0
in 15,2 16,1
FC mm 691,0 713,0
in 27,2 28,1
Standover mm 790,0 808,0
in 31,1 31,8
Stack mm 613,0 613,0
in 24,1 24,1
Effective TT mm 585,0 606,0
in 23,0 23,9
Actual TT mm 572,0 584,0
in 22,5 23,0
Seat tube mm 393,0 432,0
in 15,5 17,0
Chain stays mm 411,0 411,0
in 16,2 16,2
BB rise mm -13,5 -13,5
in -0,5 -0,5
Headtube angle 65,5 65,5
ST angle effective 72,0 72,0
Wheelbase mm 1103,0 1124,0
in 43,4 44,3