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Big Seven Sizing
MTB Hardtail Guide
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What's In The Box

Product Description

A classic hardtail mountain bike, the Merida Big Seven 40-D rolls on 27.5” wheels that offer the ideal balance between rapid rolling and nimble handling. The Big Seven is ideal for cross-country and gravel track cycling and feature disc brakes for consistent all-weather speed control.

Key Features:

High-quality 6061 aluminium alloy frame is lightweight and robust
SR Suntour fork offers 100mm of suspension travel with lockout
Shimano Altus 3x9 speed drivetrain for a wide gear range
Hydraulic disc brakes for consistent all-weather stopping
27.5” wheels for the ideal balance between rapid rolling and nimble handling
Sizes: X Small (13.5”), Small (15”), Medium (17”), Large (18.5”)
Colour: Matt Red/Orange
The Merida Big Seven 40-D is available with 0% APR finance

Merida Big Seven Review

Fast, reliable and uncompromising - The Big Seven is Merida’s classic hardtail – Available in either carbon or aluminium and in a variety of frame options with size specific wheels. The Big Seven is the ideal companion on XC and marathon race tracks due to its racing geometry whilst still offering a comfortable, upright riding position.

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 £250
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 (4 weeks)

Specification

Frame:	6061 series double butted and technoformed aluminium
Fork:	Suntour XCM 100mm travel with lockout
Headset:	Merida 44 PSE
Stem:	Merida Speed Oversize clamp 7 degree
Bars:	Merida Speed Oversize clamp 690mm wide 15mm rise
Front Brake:	Shimano EF505 hydraulic disc brakes with 160mm centrelock rotors
Rear Brake:	Shimano EF505 hydraulic disc brakes with 160mm centrelock rotors
Brake Lever:	Shimano EF505
Front Mech:	Shimano M2000
Rear Mech:	Shimano Altus, 27 speed
Shifters:	Shimano EF505 27 speed EZ-fire shifters
Speed:	27
Rims:	Merida aluminium, 32 hole for disc brakes
Front Hub:	Shimano TX505 32 hole quick release with centrelock
Rear Hub:	Shimano TX505 32 hole quick release with centrelock
Spokes:	Black steel
Front Tyre:	Merida K1080 27.5 * 2.2", wire bead, 30tpi
Rear Tyre:	Merida K1080 27.5 * 2.2", wire bead, 30tpi
Seat Post:	Merida Speed 27.2mm
Chainset:	Shimano MT100 40-30-22 with chainguard
Bottom Bracket:	FSA TH-7420ST-W, Cartridge Bearing
Chain:	KMC M99
Cassette:	Shimano CS-HG200, 9 speed, 11-32 teeth
Pedals:	VP VPE-891

Occasionally without notice, manufacturers sometimes change product specifications.

There are currently no customer reviews

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

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.

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 (2x10) speed cassette

High-end hardtails get a single front chain ring with a ten (1x10), 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 brakes are powerful in the dry but are significantly less powerful in the wet.

Mechanical disc brakes are powerful in all weather conditions

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.

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 loosing 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 wheel 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).

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

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 (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 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.

How do I apply for finance?

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).

1Fill your basket with everything you want from Tredz and go to the checkout.

2During checkout, select the finance option you want as your method of payment.

3You will be sent to our finance provider's secure server to complete your application.

4Finance providers PayPal & V12 will use the information provided to make a decision and complete checkout if you are approved.
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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

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.
- 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.

Free UK delivery, on a date that suits you
We will ring to choose a suitable day. Find out more
- Tredz bikes are fully checked & tested by Cytech qualified mechanics
- 0% APR finance (up to 48 months) is available on any basket over £250
- Price match guarantee
- 365 day 'no hassle' returns
- Free UK delivery, on a date that suits you

Height
4’8” / 142cm	XS (13.5”)
4’9” / 145cm	XS (13.5”)
4’10” / 147cm	XS (13.5”)
4’11” / 150cm	XS (13.5”)
5’0” / 152cm	XS (13.5”)	S (15”)
5’1” / 155cm		S (15”)
5’2” / 157cm		S (15”)
5’3” / 160cm		S (15”)	M (17”)
5’4” / 163cm			M (17”)
5’5” / 165cm			M (17”)
5’6” / 168cm			M (17”)
5’7” / 170cm			M (17”)	L (19”)
5’8” / 173cm			M (17”)	L (19”)
5’9” / 175cm				L (19”)
5’10” / 178cm				L (19”)
5’11” / 180cm				L (19”)
6’0” / 183cm				L (19”)

Merida Big Seven 40-D 27.5" Mountain Bike 2018 - Hardtail MTB

Product Description

Specification

There are currently no customer reviews

Merida Big Seven Bike Sizing

Is a Hardtail mountain bike right for me?

Usage and suspension travel

Frame Material

Groupset and Drivetrain

What gearing options are there?

Which are the best brakes?

Wheel Size

Does tyre width make a difference?

Suspension Fork

How do I apply for finance?

Flexible finance options

UK Delivery Information

Returns & Warranty

What's In The Box

Tredz Service:

You may also like...

Product price: £550.00

Total cost of Finance

Merida Big Seven 40-D 27.5" Mountain Bike 2018 - Hardtail MTB

Product Description

Specification

There are currently no customer reviews

Merida Big Seven Bike Sizing

Is a Hardtail mountain bike right for me?

Usage and suspension travel

Frame Material

Groupset and Drivetrain

What gearing options are there?

Which are the best brakes?

Wheel Size

Does tyre width make a difference?

Suspension Fork

How do I apply for finance?

Flexible finance options

UK Delivery Information

Returns & Warranty

What's In The Box

Tredz Service:

You may also like...

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Product price: £550.00

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