Buy Now


The OG of the Stanton range and now in its greatest iteration. From groomed trail centre to the rough stuff in your local woods, the Slackline will have you skipping through the lot.

“Every now and then something special comes along” – that’s how the Dirt Mag review for the original Slackline began in 2012. Now in its third generation and bang up to date it retains its reputation for having Goldilocks geometry. Not too slack, not too steep; not too long, not too short – but just right for every ride.

The Slackline is our all day trail slayer – the rider’s ride. The choice of customers who’ve been there, ridden that, and know what they want.

So what do they want? Well the playfulness and control that comes from 27.5 wheels for start. Unswayed by the big-wheel hype Slackline riders know they can rely on it to put a smile in every mile. And as you know, fun is fast. There’s no getting dropped by your mates on bigger wheels or full sus’s.


The confidence and control will have you pushing harder than ever, but this thing is so nimble and direct it’ll get you out of trouble as quick as you got there. It comes from the signature Stanton sweet spot of spring and stiffness with a lighter tubeset than the Switchback –  it’s slightly rowdier cousin. Playful zing from the triple-butted Reynolds 853 or 4130 in the front triangle both matched with burlier Reynolds 525 in the rear. A meticulously worked out rear triangle at that, with a length that gives both stability and pop.

We can get that rear wheel in because of the bespoke CNC’d yoke on the drive side chainstay. This burly little number also adds the lateral stiffness that means every push on the pedals is rewarded with sweet acceleration. No more so than on a climb where this bike excels and scampers up the techiest test. The yoke has been completely redesigned for Gen3 to allow room for the big tyres we’re all starting to feel the love for. It’ll accommodate high volume 2.4” on regular rims or 2.8” tyres on super-wide 27.5 Plus hoops. The Slackline is also optimised for a 120mm – 140mm fork (our geometry figures include 25% sag) so you can really play with the style of bike you want to create.

“A great all-rounder that’s not afraid to mix it with burlier builds through the tech” – Bike Radar

The ‘do-it-all hardtail’ thing has become a real cliché since the original Slackline helped create the category in the first place. We’re more into the idea of ‘do-what-you-like’ and this is the bike that lets you. There’s a simplicity and authenticity to what the Slackline delivers, a pure joy of riding that’s appreciated by purist riders and those who just want to get the most from every ride – so that’s everyone then.

Trends will come and go but there always be room for a bike like the Slackline. Maybe it’s time to make room for one in your life.

Tempted by the Ti version?

1. Reynolds 853 44mm head tube with custom CNC’d logo top tube brace, gusseted down tube and our super-sweet alloy head badge.
2. 30.9 fully stealth routed dropper-compatible seat tube (34.9 clamp) feeds round the BB and into the down tube.
3. Triple-butted Reynolds 853 DZB seamless, air-hardened and heat-treated down tube and top tube, and custom swaged and butted Reynolds 853 seamless, air-hardened heat-treated seat tube. Takes full-length gear outer for consistent, weather-proof shifting.
4. Short, tapered chainstays (427mm) made from cold-worked Reynolds 525.
5. Custom CNC’d Swapout dropouts (12 x 142, 12 x 148). Comes supplied with 12 x 148 as standard unless you specify different dropouts with your order.
6. New Custom drive side yoke creates spacing to fits high volume deep tread 2.4″ 27.5″ wheels or 2.8″ 27.5″+ tyres.
7. Recommend fork travel: 120mm - 140mm

Choose Your Spec

(6 customer reviews)

£595.00£4,132.00 (from £495.83 ex VAT)

In the Slackline we’ve created a comfortable, springy, all day frame that’s happy riding large loops at trail centres, slaying berm after berm and flowing the trail like you’re on rails.

The Slackline frame has had a total overhaul and is now our new Trail specific 27.5” frame.

The design ethos of the Slackline was to get that geometric fine line of perfect ‘slack’ angles and a great all day ride feel, while taking in to consideration the requests of customers and the markets advances.

Designed around the 27.5” wheel and the 27.5+” wheel platform, the Slackline has our custom designed drive-side yoke that creates space in the chain stays to accommodate large volume, deep tread 2.4” tyres on 27.5” wheels or 2.8” Plus tyres on super wide plus 27.5” rims, while not affecting the playfully short 427mm chain stay length, as we refuse to compromise our class leading geometries!

Build Specs

Frame Only

Seat ClampRockshox Pike Select fork
Rear AxleHeadset
DropoutsBoost Stanton Dropouts


Slackline Gen 3 16.5"18"19.5"
1. Stack (mm)609.8618.97637.31
2. Reach (mm)438.22460.85481.11
3. Virtual Top Tube (mm)600625650
4. Actual Top Tube (mm)589.02608.29630.32
5. Seat Tube Length (mm)420457495
6. Chainstay Lengh (mm)428428428
7. Wheelbase (mm)1148.741175.111203.16
8. Bottom Bracket Drop (mm)484848
9. Head Tube Length (mm)110120140
10. Head Tube Angle (˚)66.5˚66.5˚66.5˚
11. Seat tube Angle (˚)75.5˚75.5˚75.5˚
12. Measurements based on 2018 140mm 27.5" Pike RCT3 25% in to the Sag. (mm)509509509


The guide is a basic structure to how we feel the frames should fit. However, sizing a bike is a very personal thing and many factors should be taken into consideration. For instance, if you’re around 5’10″ and you’re used to larger bikes, the 18″ might suit you better than the 16.5″.

If you’re a bit taller, around 5’11”, with a riding style that’s nimble, playful and aggressive and you’re looking to do no more than short trail-centre loops or smash DH runs in the woods, the 16.5″ should suit you better.




Jason Edmunds

Carl Evans

Neil Nicholls

Matt Jones