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Specialized Stumpjumper Comp Alloy 27.5" Womens Mountain Bike 2019 - Full Suspension MTB

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Product Description

Lighter, stiffer and easier the live with. The Specialized Stumpjumper Comp Alloy is women’s mountain bike that is built around a brand asymmetric frame that offers an improved ride feel with neat touches like the super quiet chainstays protector and the ‘flip chip’ for adjustable geometry. With Fox fork and shock, 1x11 speed drivetrain and 2.6” tyres, the new Stumpy takes the trail bike to the next level.

Key Features:

  • M5 Aluminium alloy frame with women’s specific asymmetric frame design
  • 150mm of plush rear wheel travel controlled by FOX Float DPS shock
  • Fox Float Rhythm 34 fork offers 150mm of bump soaking suspension travel
  • Shimano XT/SLX 1x11 speed drivetrain for a massive 500% gear range
  • Shimano SLX hydraulic disc brakes for refined stopping power
  • Sizes: X Small, Small, Medium, Large, X Large
  • Colour: Carbon/Black
  • The Specialized Stumpjumper Comp Alloy 27.5 Women’s is available with 0% APR finance
Specialized Stumpjumper Review

True—life is full of compromises. But on the trail, we're adamant believers that you should never have to "settle"—especially with alloy frames. Nothing is more tried and true, right? That's why our Women's Stumpjumper Comp Alloy 27.5 goes above and beyond to provide you with the ride of your life. Every touchpoint is tailored for female riders, while the frame shatters every rule in the design book with a total disregard for proprietary nonsense, a revolutionary new asymmetrical frame, and custom shock tunes exclusively for women.

Our design goal for the new Stumpjumper was simple—design a trail bike 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 that examines the connection between a rider's a hands and feet, 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: Bigger frames needed more front-end stiffness while the smaller ones were just fine. We were able to keep the same stiffness standards in the front triangle of the smaller frames, while reducing weight by about 20%. And for the big frames, we ramped up the stiffness by 20% and kept the same weight.

It was then time to turn our focus to the rear-end to see how we could further improve the ride. We developed a radical new sidearm design that crushes stiffness targets. By connecting all three shock mounting points in one structure, we were able to minimize deflection when the suspension is active, and this greatly contributes to the incredible new feel on the trail. The new sidearm design also takes about 100 grams out of the rear of the frame.

We continued down the suspension path with a custom Women's Rx 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 and rider size. So, no matter what, you'll get perfectly linear suspension.

Steps were also taken to get rid of all the proprietary nonsense. 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 stroke and eye-to-eye dimensions. No AUTOSAG. No Shock Block. Customization is also 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, slackens the head tube by half-a-degree, and shortens the reach by 5mm. 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. The nubs on this protector disrupt the wave of the chain, like throwing a rock into the water to break the surface tension before jumping off a cliff. It's super cool.

The build comes with a list of components that deliver undeniable quality, like a Shimano SLX shifters, an XT rear derailleur, RaceFace cranks, Shimano SLX disc brakes, FOX front and rear suspension, and Roval Traverse 27.5 wheels. Meanwhile, every point that your body comes into contact with the bike has been tailored specifically for female riders with the inclusion of superlative kit, like a Body Geometry Myth Comp saddle, Sip Grips, and 750mm bars.

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

The Specialized Stumpjumper Comp Alloy 27.5" Womens 2019 Features are:

Frame: M5 alloy chassis and rear end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel

Rear Shock: FOX FLOAT DPS Performance, Rx Women|s Tune, rebound and 3-position compression adjust, 210x52.5mm

Fork: FOX FLOAT Rhythm, 34, GRIP Damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel

Bars: Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 750mm width

Stem: Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise

Speed: 11

Rear Mech: Shimano XT, Shadow Plus, GS cage

Shifters: Shimano SLX

Chainset: RaceFace Aeffect, 24mm spindle, 170mm crankarm, 32T

Bottom Bracket: Threaded BB, 24mm spindle

Cassette: Shimano SLX, 11-speed, 11-46t

Chain: KMC X11, 11-speed w/ Missing Link™

Front Brake: Shimano SLX, hydraulic disc, resin pads, 180/200mm rotor

Rear Brake: Shimano SLX, hydraulic disc, resin pads, 180mm rotor

Rims: Roval Traverse 27.5, hookless alloy, 29mm inner width, tubeless ready, 28h

Front Hub: Specialized, sealed cartridge bearings, 15x110mm spacing, 28h

Rear Hub: Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h

Tyres: Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5x2.6" Front, Purgatory, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5x2.6" Rear

Seatpost: X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, XS: 100mm, SM/M: 125mm, LG: 150mm of travel

Saddle: Myth Sport, steel rails, 155mm

Pedals: Specialized Dirt

Occasionally without notice, manufacturers sometimes change product specifications

Occasionally without notice, manufacturers sometimes change product specifications.

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Stumpjumper Women's Sizing

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.

 

Women’s Stumpjumper ST 27.5 Geometry

 

X Small

Small

Medium

Large

Crank length

165mm

170mm

170mm

170mm

Stem length

50mm

50mm

50mm

50mm

Seatpost length

375mm

375mm

375mm

435mm

Saddle width

155mm

155mm

155mm

155mm

Handlebar width

750mm

750mm

750mm

750mm

Reach

405mm

425mm

444mm

465mm

Top tube length, horizontal

544mm

568mm

591mm

624mm

Stack

581mm

586mm

590mm

618mm

Wheelbase

1127mm

1149mm

1170mm

1203mm

Chainstay length

432mm

432mm

432mm

432mm

Front center

696mm

718mm

739mm

772mm

Bb drop

28mm

28mm

28mm

28mm

Bb height

325mm

325mm

325mm

325mm

Seat tube angle

76.5°

76.3°

76°

75.6°

Head tube angle

66.5°

66.5°

66.5°

66.5°

Seat tube length

380mm

380mm

410mm

455mm

Head tube length

100mm

105mm

110mm

140mm

Bike standover height

742mm

744mm

749mm

761mm

Fork rake/offset

46mm

46mm

46mm

46mm

Fork length, full

522mm

522mm

522mm

522mm

Trail

103mm

103mm

103mm

103mm

 

Women’s Stumpjumper 27.5 Geometry

 

X Small

Small

Medium

Large

Crank length

165MM

170MM

170MM

170MM

Stem length

45MM

45MM

45MM

45MM

Seatpost length

325mm

376mm

376mm

438mm

Saddle width

155mm

155mm

155mm

155mm

Handlebar width

750mm

750mm

750mm

750mm

Reach

395mm

415mm

435mm

455mm

Top tube length, horizontal

547mm

570mm

595mm

627mm

Stack

587mm

592mm

596mm

623mm

Wheelbase

1135mm

1157mm

1179mm

1212mm

Chainstay length

432mm

432mm

432mm

432mm

Front center

704mm

726mm

748mm

780mm

Bb drop

21mm

21mm

21mm

21mm

Bb height

336mm

336mm

336mm

336mm

Seat tube angle

75.5°

75.3°

75°

74.6°

Head tube angle

65.5°

65.5°

65.5°

65.5°

Seat tube length

380mm

380mm

410mm

455mm

Head tube length

100mm

105mm

110mm

140mm

Bike standover height

739mm

739mm

743mm

758mm

Fork rake/offset

46mm

46mm

46mm

46mm

Fork length, full

542mm

542mm

542mm

542mm

Trail

112mm

112mm

112mm

112mm

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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Delivery & Guarantee

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Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.

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Returns & Warranty

It's easy to return a product with our 365 day, hassle free returns.

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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