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Specialized S-Works Stumpjumper 29er Mountain Bike 2019 - Full Suspension MTB

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Product Description

The ultimate trail 29er is now even better. The S-Works Stumpjumper 29er features a brand-new cutting edge Specialized frame at its heart. The asymmetric frame design is optimised for different sizes and is now stiffer than ever. The flip chip allows you to adjust the geometry to match you your personal style. As you would expect from an S-Works you get the very best Fox Factory shocks with Carbon Roval SL wheels and XX1 Eagle 1x12 speed goodness from SRAM.

Key Features:

  • FACT 11m frame features S-Works level construction design
  • Fox Factory DPX2 shock for 140mm of refined rear suspension control
  • Fox Factory 36 fork offers 150mm of the very best suspension travel
  • SRAM XX1 Eagle 1x12 speed drivetrain for quiet running and a massive 500% gear range
  • SRAM Guide RSC hydraulic disc brakes for refined stopping power
  • 29” Roval Traverse SL carbon wheels are lightweight, stiff and strong
  • Sizes: Small, Medium, Large, X Large
  • Colour: Carbon/Grey, Acid Kiwi/Black
  • The S-Works Stumpjumper 29 from Specialized is available with 0% APR finance
Specialized Stumpjumper Review

We’ve heard it all before: “This bike’s for going fast, that one’s for having fun.” “This one pedals well, that one shreds.” Why not make one bike that does everything well? Well, we did, and it's called the S-Works Stumpjumper. Unrivalled handling and stiffness, sublime suspension kinematics, and a complete abandon of proprietary nonsense—it rides like a dream. And with 29-inch wheels, you’re free to climb and descend at the hyper speed that 29ers are known for.

Our design goal for the new Stumpjumper was simple—build the ultimate trail bike, one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another, your brain gets confused with the imbalance and the bike feels unstable. In order to fix this, we had to get to work on dialling-in the materials, shapes, and the layout.

We started by creating our own mountain-specific stiffness test, and then we looked at the layout with Finite Element Analysis (FEA) to see where we could get the biggest stiffness improvements. This led to a big discovery: The Large and X-Large frames needed more front-end stiffness while the Smalls and Mediums were just fine. We were able to create a frame design that was 20% more efficient. And in the end, this proved to be one of the lightest trail frames on the market, today.

When designing the frame with the stiffness targets being a main goal, we developed a radical new sidearm design. The front-end and rear-end are connected at three points, and the sidearm helps keep all these points super stiff and connected, all while taking about 100 grams out of the rear-end. More explicitly, this minimizes frame flex when the rear suspension is active.

We continued down the suspension path with a custom Rx Trail Tune on both the fork and rear shock. Suspension performance is highly dependent on frame, wheel, and rider size, so we use our Rx Tune to get each bike to land in the middle of the adjustment spectrum, and this gives you the biggest possible range to fine-tune your ride. Another focal point of the tune was matching the suspension characteristics between wheel sizes—we developed a specific Rx Tune for each platform. So, no matter what wheel size you prefer, you’ll get perfectly linear suspension.

Steps were also taken to make this bike easy to live with. Threaded bottom brackets make a triumphant return, and we made room for up to a 3.0" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard metric shocks. We revamped the SWAT™ box, too, making it sleeker, lighter, and with more volume. And customization is furthered with a Flip Chip that lets you to dial-in your Stumpy to your riding style. Switch it from High to Low and it drops your bottom bracket 6mm and slackens the head tube by half-a-degree. Little details also jump out to surprise you, like a newly designed ribbed chainstay protector that makes chain slap a thing of the past and nearly silences the drivetrain. Lastly, we seriously couldn’t make cable routing any easier on carbon models. Full tubes can be found throughout the carbon frame, so all you have to do is push the cable and it’ll come out the other end. No more lazy loop, hidden stashes of magnets, pokey spokes, or pillows to cry in.

As with every S-Works build, this S-Works Stumpjumper 29 comes with only top-of-the-line parts, like a full SRAM XX1 Eagle drivetrain, SRAM Guide RSC disc brakes, FOX Factory front and rear suspension (150/150mm respectively), and the best carbon wheels money can buy, the Roval Traverse SL 29.

 

All Tredz bikes are:

  • Fully built & ready to ride
  • Fully checked & tested by Cytech qualified mechanics
  • Available with 0% APR finance (up to 48 months) on any basket over £99
  • UK price match guarantee
  • 365 day no hassle returns
  • Free delivery in the UK Mainland on a date that suits you

In the box with every Tredz bike is:

  • Free Tredz 9 key trail tool
  • Free Tredz pedal spanner
  • Free basic pedals
  • Tredz drawstring kit bag
  • 16 point quality control check sheet
  • Basic bike setup instructions
  • Free Cycle Plan insurance voucher (8 weeks)

Specification

Frame:FACT 11m, full carbon chassis and rear end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur
Fork:FOX 36 29" 150mm FACTORY
Rear Shock:FOX FLOAT DPX2 Factory, Rx Trail Tune, EVOL Air sleeve, Kashima Coat, 3-position adjustment w/ Open Mode adjustment, 210x50mm
Stem:Syntace MegaForce 2, 6-degree, 31.8mm clamp
Bars:Specialized Trail, FACT carbon, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm, 31.8mm
Front Brake:SRAM Guide RSC, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor
Rear Brake:SRAM Guide RSC, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor
Rear Mech:SRAM XX1 Eagle™
Shifters:SRAM XX1 Eagle, trigger
Speed:12
Rims:Roval Traverse SL 27.5, hookless carbon, 30mm inner width, 24h/28h, tubeless ready, hand-built
Front Hub:Roval Traverse, sealed cartridge bearings, 15mm thru-axle, 110mm spacing, 24h
Rear Hub:Roval Traverse, DT Swiss Star Ratchet, 54t engagement, SRAM XD driver body, 12mm thru-axle, 148mm spacing, 28h
Spokes:DT Swiss Revolution
Front Tyre:Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"
Rear Tyre:Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"
Seat Post:Command Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel
Chainset:SRAM XX1 Eagle, Boost™ 148, 170mm crankarm, 24mm spindle, 30T
Bottom Bracket:SRAM GXP
Chain:SRAM XX1 Eagle, 12-speed w/ PowerLock®
Cassette:SRAM X01 Eagle, 12-speed, 10-50t
Pedals:Specialized Dirt

Occasionally without notice, manufacturers sometimes change product specifications.

Specialized S-Works Stumpjumper 29er Mountain Bike 2019 - Full Suspension MTB Reviews

Write your own review
Overall Rating:
5
out of 5
5
Build Quality
5
Performance
5
Value For Money
5

Customer Reviews (1)

5
Pure perfection

The Tredz company is real professionals. I chose a product that was consistent with the description, shipping instant, well-protected against damage. During the telephone conversation, I received specific and factual answers. Top-class professionals. I would highly recommend.

The Tredz company is real professionals. I chose a product that was consistent with the description, shipping instant, well-protected against damage. During the telephone conversation, I received specific and factual answers. Top-class professionals. I would highly recommend.

Close review
5 out of 5
Build Quality: 5/5
Performance: 5/5
Value For Money: 5/5

Specialized 29 Geometry

Specialized Stumpjumper Bike Sizing

See the table below to find the right size Specialized Stumpjumper.

Height

Size

5’2” / 158cm

S

 

 

 

 

5’3” / 160cm

S

 

 

 

 

5’4” / 163cm

S

 

 

 

 

5’5” / 165cm

S

 

 

 

 

5’6” / 168cm

S

M

 

 

 

5’7” / 170cm

 

M

 

 

 

5’8” / 173cm

 

M

 

 

 

5’9” / 175cm

 

M

 

 

 

5’10” / 178cm

 

M

L

 

 

5’11” / 180cm

 

 

L

 

 

6’0” / 183cm

 

 

L

 

 

6’1” / 185cm

 

 

L

XL

 

6’2” / 188cm

 

 

 

XL

 

6’3” / 191cm

 

 

 

XL

 

6’4” / 193cm

 

 

 

XL

XXL

6’5” / 196cm

 

 

 

 

XXL

6’6” / 198cm

 

 

 

 

XXL

Read our bike size guide for more information on sizing.

Stumpjumper 29 Geometry

 

Small

Medium

Large

X Large

Crank length

170mm

170mm

170mm

170mm

Stem length

40mm

40mm

50mm

50mm

Seatpost length

369mm

429mm

429mm

429mm

Saddle width

143mm

143mm

143mm

143mm

Handlebar width

780mm

780mm

780mm

780mm

Reach

415mm

435mm

455mm

480mm

Top tube length, horizontal

569mm

592mm

624mm

657mm

Stack

607mm

607mm

635mm

649mm

Wheelbase

1141mm

1161mm

1192mm

1223mm

Chainstay length

437mm

437mm

437mm

437mm

Front center

707mm

727mm

758mm

789mm

Bb drop

39mm

39mm

39mm

39mm

Bb height

333mm

333mm

333mm

333mm

Seat tube angle

75.8°

75.5°

75.1°

74.7°

Head tube angle

67.5°

67.5°

67.5°

67.5°

Seat tube length

380mm

410mm

455mm

505mm

Head tube length

95mm

95mm

125mm

140mm

Bike standover height

740mm

743mm

755mm

768mm

Fork rake/offset

51mm

51mm

51mm

51mm

Fork length, full

540mm

540mm

540mm

540mm

Trail

99mm

99mm

99mm

99mm

 

Stumpjumper ST 29 Geometry

 

Small

Medium

Large

X Large

Crank length

170MM

170MM

170MM

170MM

Stem length

40MM

40MM

50MM

50MM

Seatpost length

369mm

429mm

429mm

429mm

Saddle width

143mm

143mm

143mm

143mm

Handlebar width

780mm

780mm

780mm

780mm

Reach

415mm

435mm

455mm

480mm

Top tube length, horizontal

569mm

592mm

624mm

657mm

Stack

607mm

607mm

635mm

649mm

Wheelbase

1141mm

1161mm

1192mm

1223mm

Chainstay length

437mm

437mm

437mm

437mm

Front center

707mm

727mm

758mm

789mm

Bb drop

39mm

39mm

39mm

39mm

Bb height

333mm

333mm

333mm

333mm

Seat tube angle

75.8°

75.5°

75.1°

74.7°

Head tube angle

67.5°

67.5°

67.5°

67.5°

Seat tube length

380mm

410mm

455mm

505mm

Head tube length

95mm

95mm

125mm

140mm

Bike standover height

740mm

743mm

755mm

768mm

Fork rake/offset

51mm

51mm

51mm

51mm

Fork length, full

540mm

540mm

540mm

540mm

Trail

99mm

99mm

99mm

99mm

Read our Mountain Bike Geometry Explained guide for more information on MTB geometry

Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!

Full Sus MTB Guide

 

Is a full-suspension mountain bike right for me?

If you’re new to the world of cycling, we highly recommend taking a look at our bike buying guide overview or our mountain bike buying guide to help you decide what type of bike is right for your needs.

When you’re choosing a full suspension mountain bike, there are a few things to look out for which can help you to work out the quality and performance you can expect from a particular model.


Suspension travel & usage

Depending on the type of mountain bike riding you’ll be doing, you may want to have longer or shorter suspension travel on your bike:

Travel

Usage

Pros

Cons

Up to 120mm

XC

Lightweight & efficient pedalling for long-distance rides

Short travel is less capable on rough & demanding trails with large jumps & drops

120 – 150mm

Trail

Lightweight, balance of climb-friendly efficiency & rough-descent capability

More weight than a shorter travel bike & less efficient climbing. Less capable on descents than a longer travel bike

150-180mm

Enduro

Capable of covering difficult & technical downhill sections. Wide enough gear range for climbing

Heavier & significantly less efficient at climbing compared to shorter travel bikes

180mm +

Downhill

Designed for highly technical & high-speed descents, with big drops and large jumps

Heavy, and inefficient at climbing. Limited gear range means most climbs will require pushing the bike


Frame material

Full-suspension MTB frames are mostly made from either aluminium or carbon fibre, with each material having its own benefits & drawbacks.

Aluminium

Aluminium is lightweight, stiff, strong, and easy to manufacture. Manufacturers often develop their own aluminium alloys, such as ALUXX by Giant. Aluminium is found on a wide range of bikes, from entry-level & enthusiast bikes, right the way up to top-spec racing bikes.

Carbon

Carbon fibre is lighter, stiffer, stronger, and more expensive than aluminium. The most affordable carbon bikes typically use medium strength carbon fibres, while the most expensive bikes use stronger ‘high modulus’ carbon. Carbon fibre frames are found on enthusiast-level bikes, right up to high-performance bikes designed for racing.


Groupset & drivetrain

A bike’s groupset, or drivetrain, is where the biggest difference in component quality is seen.
A complete groupset comprises of the following parts:

  • Chainset (aka Crankset)
  • Bottom bracket
  • Brakes
  • Brake levers
  • Shifters
  • Front & rear derailleur
  • Chain
  • Cassette
MTB Groupsets

Mountain bike groupset components are typically supplied by either Shimano or SRAM, with additional manufacturers like Formula, Hope, Magura, Tektro and TRP supplying brake systems. Shimano & SRAM both produce a range of groupsets to suit different budgets. The hierarchy table here compares the different Shimano & SRAM groupsets to determine which bikes offer the best performance.


Wheel size

You’ve probably noticed that a lot of mountain bikes come in a choice of wheel size, mainly a 27.5 inch wheel (also known as a 650B wheel) or a 29inch wheel (known as a 29er). Although there are still bikes which use 26 inch wheels, these are gradually being phased out on all but the smallest bikes. The difference between these wheel sizes can have a dramatic effect on the way a bike feels and handles out on the trail.

27.5in/650b Wheels

27.5inch wheels are smaller and lighter than 29er wheels, which makes them more agile and gives the bike a more responsive & playful nature. On the other hand, the smaller wheel size rolls less efficiently than the larger size, making the bike more prone to losing speed over rough ground and making it a little slower when climbing.

29er Wheels

29er wheels have a bigger rolling radius which makes them naturally smoother over rough ground. For this reason, a 29er mountain bike often requires less suspension travel than smaller wheeled alternatives. The downsides are an increase in weight, and the larger diameter wheels generate stronger gyroscopic forces, making the bike more stable, but less agile and responsive whilst manoeuvring.

26in Wheels

26 inch wheels were once the go-to wheel size on adult mountain bikes. However, they are now typically only found on the smallest frame sizes, and on junior bikes. 26 inch wheels are lightweight and give the bike very agile handling. The downsides to 26 inch wheels are their poor rolling resistance on rough ground, and the reduced contact patch due to the smaller wheel circumference.


Suspension components

Mountain bike suspension components (i.e. the fork or rear shock absorber) are also a way to identify the quality of a bike. While Fox and RockShox are the most common manufacturers, there are a number of brands producing suspension components for mountain bikes.

Entry level full suspension mountain bikes (up to approximately £1300) may come supplied with a fork & rear shock supplied by SR Suntour, X-Fusion or RockShox. These components will allow a limited amount of adjustment, including:

  • Coil spring preload / air spring pressure adjustment
  • Lockout switch
  • Rebound damping adjustment on models towards the top of the price range.

Mid-range & enthusiast bikes (up to approximately £3500) use components from brands including Fox, RockShox and Manitou. At this level, suspension components have features like:

  • Preload adjustment / air spring pressure adjustment
  • Rebound damping adjustment
  • Lockout switch
  • Multi-position ‘mode’ switch
  • Components towards the top end of the enthusiast price range may also feature compression damping adjustment as well.

Top of the range & competition spec bikes (over £3500) also use components from Fox, RockShox & Manitou, with a few select models using parts from Ohlins. At this price, suspension components have features including:

  • Coil spring preload adjustment / air spring pressure adjustment
  • High & low speed rebound damping adjustment
  • High & low speed compression damping adjustment
  • Lockout switch
  • Multi-position 'mode' switch
  • Advanced low-friction coatings (e.g. Fox’s golden-coloured Kashima coating)

Finance

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Spend £99 or more at Tredz and you can spread the cost. Pay monthly over 6-48 months, interest free (dependent on repayment terms and amount).

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We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.

If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.

For more information please visit our Returns & Warranty page.

What's In The Box

What's In The Box

As cyclists ourselves, we know you will be keen to get out on your new bike as soon as possible. That's why we provide you with all the essential kit you need to get your shiny new bike rolling for the first time.

Most bikes don't come with pedals as standard so we include a set of basic pedals, free of charge with every bike we send out. We will also provide you with a pedal spanner to fit them and a 9-key trail tool, along with full instructions for setting your bike up out of the box. Each bike is sent out with a 16 point, quality control check sheet so you can be confident that your bike has been fully checked by our qualified mechanics.

What's in the box
  • Basic setup instructions
  • 16 point quality control checklist
  • Free tredz multitool
  • Free tred pedal spanner
  • Free basic pedals
  • Free drawstring kit bag
  • Free bike insurance voucher

All these items are provided at no extra charge and are packed into a Tredz drawstring bag that doubles up as a handy backpack for carrying your ride essentials.

  • Basic bike setup instructions
  • Free ‘basic’ pedals
  • Free Tredz pedal spanner
  • Free Tredz 9-key trail tool
  • Free Tredz drawstring bag
  • Free 8 weeks insurance voucher
  • 16 point, quality control check sheet

Tredz Service:

Tredz bikes are fully built & set up to ride
Read our bike setup guide.

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  • Tredz bikes are fully checked & tested by Cytech qualified mechanics
  • 0% APR finance available on any basket over £99
  • Price match guarantee
  • 365 day 'no hassle' returns
  • Free UK delivery, on a date that suits you

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