NS Bikes Surge (frame only) review

Superb value playbike

Our rating 
4.0 out of 5 star rating 4.0
GBP £239.99 RRP | USD $390.57

Our review

Tight, beautifully balanced but still unmistakably steel, the Surge is an absolute blast as well as an absolute bargain
Skip to view product specifications

NS bikes are firmly rooted in street riding and dirt jumping, so it’s no surprise that the Surge is a super-agile, compact aerial combat take on the freeride hardtail genre. What did surprise us was how great it felt on the singletrack.


Ride & handling: Superb value for money, with a tight, responsive feel

Our Surge came equipped with dreadful tyres and an underwhelming fork, but that couldn’t stop us having a huge amount of fun on it. In fact, the constant chasing of traction and catching repeated rear wheel slip showcases the impressively immediate reactions inherent in the frame.

With a short-travel fork, stubby stem and super-wide bar you’ve got instant reactions for twisting the tyre right on the contact spot at slow speeds or stirring it about to find traction on loose or wet trails.

The steepened seat angle focuses your bodyweight right over the front wheel too, pinning the Michelin onto the trail as far as possible. With the frame capable of taking a fork up to 160mm (6.3in) you can set it up slacker and more steady though.

No matter how you set it up, the tight feel delivered by the mainframe and chunky seatstays is obvious. However much the fork twists and the tyres slide, your reactions are processing very clear snapshots of the situation.

The low slung frame (both in terms of the top tube and the bottom bracket) makes it easy to tip or twist into corners or rip off-camber sections. Despite feeling snappy under power it doesn’t sting unduly on big landings either with the smooth steel flow making the weight penalty over alloy worth swallowing.

The skinny seatpost, with its extra long extension, provides extra comfort in the saddle, but heavy riders should probably drop the seat low on serious descents to avoid levering the frame apart.

NS bikes surge: ns bikes surge
Steve Behr

Frame: Oversize chassis with steel’s naturally sting-reducing feel

NS are tight-lipped about the tubing of the Surge. What we do know is that magnets stick to it, so it’s definitely steel. It’s lighter than the previous Surge and feels very lively too, so there’s almost certainly some tube butting creating the clean-lined chassis.

A straight-gauge head tube with graphic head badge keeps things simple up front, while a short throat gusset allows use of forks with up to 160mm (6.3in) of travel.

While the tubes look skinny due to the super low layout, the down tube is seriously oversized. The seatpost is skinny though, and its 394mm (15.5in) length penetrates the super-low top tube for huge standover clearance. Plump seatstays sprout from the outside of the top tube/ seat tube intersection with an A-frame brace.

It’s the same layout for the ovalised chainstays, while flattened ends onto thick plate dropouts keep the rear end simple and strong. A replaceable dropout sits on the outside to take it for the team if the bike crashes or gets crushed, while straight-through cabling keeps the gears sweet. The Surge also now has an ISCG mount.

There are no bottle cage bosses here, so you’ll need to Camelbak up for a long ride. The Surge hasn’t got great tyre clearance but it will take 2.35in rubber fine. The welding isn’t flawless, but the overall finishing is very good and the tolerances tight. The minimal logo (just one under the down tube) on black or blue paintjobs gives it a really classy look, in line with its dirt heritage.

The super low top tube gives huge clearance and great turn and burn agility: the super low top tube gives huge clearance and great turn and burn agility
Steve Behr

Equipment: Pick your own, but we can’t recommend this fork or tyres

The Surge is a frame-only deal, but UK importers Hotlines rigged our sample up with some other products from their portfolio. The super-wide Warhead bars, machined ‘Thomson twin’ stem, twin bolt seatpost and Generator hub from Nuke Proof are really good kit.

Hayes Stroker brakes are super-reliable and Shimano’s SLX groupset delivers outstanding drivetrain performance for the price.

We really wouldn’t recommend the Manitou fork though. It doesn’t get full travel, adequate tuning takes hours of patience and the bolted 20mm axle is a right pain.


Michelin’s AT tyres never fail to astonish us with how little grip or predictability they provide and we pinch flatted the rear twice despite the heavy ‘reinforced’ carcass.

Product Specifications


Name Surge (Frame Only) (10)
Brand NS Bikes

Available Colours Black Blue
Rear Derailleur Shimano XT
Weight (lb) 28.8
Weight (kg) 13.06
Stem Nuke Proof Warhead 70mm
Shifters Shimano XT
Seatpost Nuke Proof Warhead
Seat Angle 73
Saddle NC-17
Rims Sun Ringle Equalizer 27
Rear Wheel Weight 2470
Rear Hub Nuke Proof Generator disc
Headset Type Nuke Proof Warhead SL Aheadset
Available Sizes L M
Head Angle 69
Handlebar Nuke Proof Warhead riser bar 28in
Grips/Tape NC17 lock on
Front Wheel Weight 2200
Front Hub Nuke Proof Generator disc
Frame Material Chromoly steel
Fork Manitou Minute MRD Absolute, 130mm (5.1in) travel
Cranks Shimano SLX 22-32-44T
Chain SRAM PC 991
Cassette Shimano HG 770 XT 9spd, 11-32T
Brakes Hayes Stroker Trail disc 180/160mm rotors
Spoke Type 32 double-butted black