Specialized Rockhopper Comp 29" 2X Mountain Bike 2021 - Hardtail MTB

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Product Description

The Specialized Rockhopper hardtail mountain bike continues a 30-year tradition of never settling for ‘good enough’. The Rockhopper Comp 29 2x starts with a lightweight, butted aluminium frame, and calls on modern gearing, class-leading kit and versatile geometry for capability that’s always on-call. Not stopping there, innovative sizing and custom Rx Tune suspension add big performance without dialling up the price.

Key Features:

  • Lightweight butted aluminium alloy frame
  • Custom tuned Suntour suspension fork for a smoother ride
  • Shimano hydraulic disc brakes for confident speed control
  • Shimano 2x9 speed drivetrain for a wide range of gears
  • Sizes: M, L , XL, XXL
  • Colours: Gloss Smoke / Satin Black, Gloss Oasis / Tarmac Black
  • The Rockhopper Comp 29 2x is available with 0% APR finance

Strut your stuff high and low with the two-stepping Shimano 2x9 drivetrain on the Rockhopper Comp 2x. The size-specific Premium A1 Aluminum frame makes for the perfect dance partner with geometry that lets you attack twists and turns with sharp, responsive handling and tackle descents with confidence-inspiring stability.

An SR SunTour XCM fork gets our RxTune treatment and hydraulic disc brakes keep up with whatever rhythm you throw at them, while a killer wheelset with Shimano hubs means you've got plenty of options when it comes to lacing up your dancing shoes.

Key Features:

  • A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper features butted aluminum tubes in order to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing and dropper-post compatibility. With the goal of making sure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we’ve paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size.
  • With Rx Tune on Rockhopper, the lockout-equipped SR Suntour XCM with custom Multi-Circuit damping brings size-specific travel and spring rates to the show in a performance that’s sure to impress while also ensuring consistent geometry, handling and suspension performance, regardless of frame or wheel size.
  • Beautifully beastly, Shimano MT200 hydraulic disc brakes pack a mean bite but deliver their power with a refined, intuitive feel to make for a package that punches way above its pay grade.
  • Full 2x9 Shimano shifting handles drivetrain duties while you focus on the ride.
  • Pair dead-reliable hubs from Shimano with our 25-millimeter internal diameter, hookless Stout rims for a wheelset hat-trick: strong, light and durable.

All Tredz bikes are:

  • Fully built & ready to ride
  • Fully checked & tested by Cytech qualified mechanics
  • Available with 0% APR finance 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)

Occasionally, without notice, manufacturers change product design and/or specifications.

Specification

Frame:A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible
Fork:SR Suntour XCM 29, 30mm Stanchions, Rx Tune, coil spring, custom Multi-Circuit damping w/lockout, QR, 90/100mm travel (size-specific), 46mm offset
Stem:Stout 3D-forged alloy, 31.8mm, 6-degree rise
Bars:Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm
Front Brake:Shimano BR-MT200, hydraulic disc, 180mm
Rear Brake:Shimano BR-MT200, hydraulic disc, 160mm
Front Mech:Shimano Altus FD-M2020 2-speed
Rear Mech:Shimano Alivio, Shadow Design, SGS cage, 9-speed
Shifters:Shimano Acera, RapidFire Plus, 9-speed
Speed:18
Rims:Stout Alloy, hookless, pinned, disc only, double-wall, 25mm inner width, 28h
Front Hub:Shimano HB-TX505, Center Lock™ disc, 9x100mm spacing, quick-release, 28h
Rear Hub:Shimano FH-TX505, Center Lock™ disc, 9x135mm spacing, quick-release, 32h
Spokes:Stainless, 14g
Front Tyre:Ground Control Sport, 29x2.3"
Rear Tyre:Ground Control Sport, 29x2.3"
Seat Post:Alloy, 12mm offset, 2-bolt clamp, 30.9mm
Saddle:Bridge Sport, steel rails
Chainset:Stout 2x, forged alloy 22/36T
Bottom Bracket:Square-tapered, 73mm, internal bearings, 122.5mm spindle
Chain:KMC X9EPT, 9-speed, anti-corrosion coating w/ reusable Missing Link™
Cassette:SunRace, 9-Speed, 11-36t
Pedals:Specialized Dirt

Rockhopper Sizing

Specialized Logo

Specialized Rockhopper 2021 Sizing

 

Size Height cm Height inch
XS 148 - 155 4'10 - 5'1
S 158 - 165 5'2 - 5'6
M 165 - 178 5'6 - 5'10
L 178 - 185 5'10 - 6'1
XL 185 - 193 6'1 - 6'4
XXL 191 - 200 6'3 - 6'6

 

What size frame do I need if I am between sizes? - read here

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!

MTB Hardtail Guide

 

Hardtail Mountain Bike Guide

Is a Hardtail mountain bike right for me?

If you’re new to the cycling world, 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 hardtail 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.


Usage and suspension travel

Depending on the type of mountain bike riding you’ll be doing, you will want a bike with a longer travel or shorter travel suspension fork as well as components suited to more or less technical terrain.

Usage

Travel

Price Bracket

Pros

Cons

Recreational - riding on gravel tracks and rough roads

80 - 100mm

£200 - £500

Affordable. Low profile tyres roll quickly on smooth surfaces

Not very lightweight. Not capable on technical terrain. Components are less durable.

Cross-country / XC - more adventurous off-road riding and XC racing

100mm

£500 - £9,000

Lightweight, especially high-end carbon models. Fast climbing and accelerating. Efficient on long rides

Less capable on technical terrain than a trail hardtail

Trail - riding technical trails and trail centre loops

120mm – 150mm

£800 - £4,000

More capable on technical terrain, especially fun downhill sections

Heavier than an XC hardtail. Less efficient when climbing

Jump - Dirt jumping and skatepark riding

100mm

£500 - £1,500

Robust frames and components. Ideal for learning airborne skills

Not good for general mountain bike riding

 

 

Usage

Travel
& Price

Pros
/ Cons

Recreational - riding on gravel tracks and rough roads

80 - 100mm

£200 - £500

Affordable. Low profile tyres roll quickly on smooth surfaces

Not very lightweight. Not capable on technical terrain. Components are less durable

Cross-country / XC - more adventurous off-road riding and XC racing

100mm

£500 - £9,000

Lightweight, especially high-end carbon models. Fast climbing and accelerating. Efficient on long rides

Less capable on technical terrain than a trail hardtail

Trail - riding technical trails and trail centre loops

120mm – 150mm

£800 - £4,000

More capable on technical terrain, especially fun downhill sections

Heavier than an XC hardtail. Less efficient when climbing

Jump - Dirt jumping and skatepark riding

100mm

£500 - £1,500

Robust frames and components. Ideal for learning airborne skills

Not good for general mountain bike riding

 

 


Frame Material

Hardtail MTB frames are mostly made from aluminium alloy. High-end cross-country race bikes will have carbon fibre frames while trail hardtails and jump bikes sometimes feature steel frames.

Aluminium

Aluminium alloy frames are strong and lightweight. More expensive alloy hardtail MTBs tend to have ‘butted’ and/or formed frames which are lighter but just as strong.

Steel

Steel frames are heavier but offer a more comfortable ride, especially on higher end models, thanks to the more compliant nature of steel.

Carbon fibre

Carbon fibre composite frames offer the best of both worlds as they are strong, lightweight and comfortable. They are more expensive however and carbon hardtails start at around £1,300


Groupset and 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

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. 

What gearing options are there?

Most hardtails offer a wide range of gears for taking on a variety of terrain. It’s not all about the number of gears though as fewer gears on the front, combined with a wide range rear cassette are much easier to use, but still give you the same wide range of gears. As you go up the price points shifting gets easier with more cogs on the rear cassette and fewer front chainrings.

 Shimano LogoSRAM Logo
Professional
11
XTR Di2
12
XX1 AXS Eagle
AXS Eagle

12
X01 AXS Eagle
AXS Eagle
 
12
XTR
11
XX1

11
X01
 
11
XT Di2
 
Enthusiast
12
XT
 
11
SLX
10
GX
 
10
Deore
11
NX
Entry
9
Alivio
12
SX Eagle
Eagle
 
9
Acera
9-10
X9
 
9
Altus
9-10
X7
 
7
Tourney
7-10
X5

 

 

Entry-level hardtails will have a triple chainset with a seven (3x7) or eight (3x8) speed cassette

Mid-level hardtails tend to have a double chainset with a nine (2x9) or ten (1x10) speed cassette

High-end hardtails get a single front chain ring with a eleven (1x11) or even twelve (1x12) speed cassette

Which are the best brakes?

There are three types of brakes found on most hardtail mountain bikes:

Rim brake example

Rim brakes are powerful in the dry but are significantly less powerful in the wet.

Mechanical disc brake example

Mechanical disc brakes are powerful in all weather conditions

Hydraulic disc brake example

Hydraulic disc brakes are the most powerful in all weather conditions, and also offer the best braking precision.


Wheel Size

You’ve probably noticed that 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). Another option is 27.5+ or 6Fattie wheels which bridge the gap between 27.5” and 29” wheels. The traditional MTB wheel size is 26”, but are now only found on some small sized MTBs as well as jump bikes. The difference between these wheel sizes can have a dramatic effect on the way a bike feels and handles out on the trail.

MTB wheel sizes

27.5” (650b) wheels strike the ideal balance between fast rolling and nimble handling. They are lighter than 29” wheels so are faster to accelerate. 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.

29” wheels roll fastest but are less nimble. These wheels are naturally smoother over rough ground but are heavier and slower to accelerate. Larger riders may find a better fit on a 29er, but smaller riders may find 29” wheels a little cumbersome.

27.5+ (6fattie) wheels feature wider 2.8” – 3.0” tyres and offer more cushioning (float) as well as more grip. With the extra size of the high-volume tyres, the overall wheel diameter is similar to a 29er so these wheels carry speed very well on rough ground. Plus sized wheels are ideal for riding more challenging terrain.

26” wheels are the nimblest and are great for smaller riders as well as jump bikes. While quick to accelerate these wheels are the slowest over rough ground.

Does tyre width make a difference?

Tyre width effects both speed as well as grip. Narrower tyres are faster rolling while wider ones offer more grip as well as more cushioning (float).

Recreational tyre example

1.95” - 2.0” tyres roll quickly and are good for recreational riding and light off-roading.

Trail tyre example

2.2” - 2.6” tyres are a little slower on smooth surfaces but offer much better grip in the corners and are ideal for MTB trail riding

Plus size tyre example

Plus size (6fattie) 2.8” – 3.0” tyres increase the overall diameter of the wheel so still roll quite quickly while offering a lot more grip and float. These are best for rougher terrain


Suspension Fork

The performance of suspension forks varies a lot. Forks on higher end bikes tend to offer more control and are more adjustable. Look for Fox, RockShox or Manitou forks with adjustable rebound and compression damping for the best performance on technical trails. The performance level you require will depend on what type of riding you want to do. 

For recreational riding on roads and gravel tracks, you won’t need a high-performance fork. A lockout feature can be useful for more efficient climbing on roads and smoother tracks. Air sprung forks are lighter than coil sprung forks.

For cross cross-country mountain biking lightweight air sprung forks are best. Adjustable rebound damping is essential for serious off-roading and a remote lockout switch will allow you to quickly firm up the suspension when climbing.

Trail hardtails feature longer travel suspension forks for riding on rougher terrain. Adjustable rebound damping is essential for control on challenging trails. Lockout is less important on these bikes as they are catering for riders who like the downs more than the ups. Adjustable compression damping is useful as it can help you achieve optimum performance levels. Thru-axles and tapered steerer tubes improve steering control.

Suspension fork in action

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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Delivery & Guarantee

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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 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 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 14 Days 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
  • 365 day 'no hassle' returns
  • Free UK delivery, on a date that suits you

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