Merida Big Seven 80 Mountain Bike 2026 - Hardtail MTB

The Big Seven 80 is a 27.5in hardtail designed for smaller riders and agile handling. A 120mm RockShox air fork, Shimano CUES 1x9 gearing, hydraulic disc brakes and 2.4in tyres provide a practical setup for trails, exploring and everyday riding.
Key Features:
- TFS 6061 aluminium frame with double-butted, technoformed tubing
- RockShox Judy Gold Air suspension fork with 120mm travel and lockout
- Shimano CUES U4000 1x9-speed drivetrain with wide-range 11-46t cassette
- Shimano MT200 hydraulic disc brakes with 160mm rotors
- 27.5in Merida Comp CC II wheels with 2.4in Kenda Booster tyres
- Dropper-ready frame and tubeless-ready rims offer useful upgrade potential
- Available with 0% APR finance
The Big Seven 80 is built around 27.5in wheels, making it particularly well suited to smaller riders or anyone who prefers the more agile feel of a smaller wheel. Merida combines this with updated hardtail geometry to improve its ability on the trails without taking away the everyday versatility that makes a hardtail useful beyond dedicated off-road rides.
Its TFS V frame is made from 6061 aluminium, with double-butted and technoformed tubes used to balance strength and weight. The updated geometry combines a longer reach with shorter stems, alongside a steeper seat angle and slacker head angle. This creates a more modern riding position, with the aim of improving control on descents while keeping the rider well positioned for pedalling and climbing.
A tapered head tube adds stiffness around the front of the bike and provides greater compatibility if you decide to upgrade the fork in the future. Cables are routed internally for a cleaner appearance and additional protection, while the rear brake caliper is positioned on the chainstay to help keep it protected.
The RockShox Judy Gold Air fork provides 120mm of suspension travel. Unlike a basic coil fork, its air spring can be adjusted to suit rider weight, making it easier to achieve an appropriate setup. A lockout lets you reduce fork movement when riding smoother surfaces where suspension isn't needed.
Shimano CUES U4000 provides straightforward 1x9-speed gearing. A single 32t chainring keeps the controls simple, while the wide-range 11-46t cassette provides useful lower gears for off-road climbs without the additional complexity of a front derailleur.
Shimano MT200 hydraulic disc brakes use 160mm rotors front and rear. Hydraulic operation provides predictable braking with relatively light lever effort, helping with speed control on the trail as well as offering consistent performance in changing weather.
Merida Comp CC II aluminium rims have a 25mm internal width and are tubeless ready, giving you the option of moving to a compatible tubeless setup in the future. They're paired with 27.5x2.4in Kenda Booster tyres, whose width and off-road tread provide useful grip and cushioning across loose and uneven terrain.
The frame can accommodate tyres up to 27.5x2.4in, so the supplied Kenda tyres already make use of the stated maximum clearance. It's also ready for a dropper post, providing another useful upgrade option as a rider progresses onto steeper or more technical trails.
Mudguard and kickstand mounts add everyday practicality, allowing the Big Seven 80 to be adapted for commuting or general riding alongside its trail duties.
The Big Seven range is specifically centred around 27.5in wheels, while Merida's equivalent Big Nine models use 29in wheels. For riders who fit either platform, the smaller wheels of the Big Seven favour manoeuvrability and can make the bike easier to handle, while also helping Merida provide suitable proportions for shorter riders.
Overall, the Big Seven 80 offers a useful step into more serious mountain biking without becoming overly specialised. Its adjustable air fork, wide tyres, hydraulic brakes and simple 1x drivetrain make it well suited to developing trail skills, while practical frame mounts and upgrade options leave plenty of scope for everyday riding and future progression.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | TFS V - 6061 aluminium, double butted and technoformed. Tapered head tube. Chain stay mounted disc brake. Internal cable routing. Mudguard and kick stand mounts. BSA threaded BB. 135mm x 9mm axle. Max. tyre size 27.5" x 2.4" |
| Fork | RockShox Judy GOLD; Air; 120 mm travel Lockout; 42mm fork offset |
| Headset | FSA NO.55R/57SC/57B |
| Stem | Merida Comp CC; material: aluminium; 31.8 mm diameter; 7 degree rise |
| Bars | Merida CC; material: aluminium; 15mm rise; XXS/XS: 700mm wide; S: 720mm wide |
| Front Brake | Shimano MT200; hydraulic brake with Shimano RT10; 160 mm |
| Rear Brake | Shimano MT200; hydraulic brake with Shimano RT10; 160 mm |
| Rear Mech | Shimano Cues U4000; GS |
| Shifters | Rear: Shimano Cues U4000 |
| Speed | 9 |
| Rims | Merida Comp CC II; 25mm inner rim width; material: aluminium; tubeless ready |
| Front Hub | Shimano QC300; 100x9mm; 32 Spoke; Centerlock |
| Rear Hub | Shimano QC300-HM; 135x9mm; 32 Spoke; Centerlock |
| Spokes | Black steel |
| Front Tyre | Kenda Booster; 27.5x2.4" |
| Rear Tyre | Kenda Booster; 27.5x2.4" |
| Seat Post | Merida Comp CC; material: aluminium; 30.9mm diameter; in-line |
| Saddle | Merida Comp SL; V-mount |
| Chainset | Shimano Cues UT400-1; 32 tooth chainset; material: aluminium ; Crank length: 165mm |
| Bottom Bracket | Shimano UN101 LL123 |
| Chain | KMC xGlide |
| Cassette | SunRace U9 CS-U980 9AZ; 11-46 teeth; 9 speed |
| Pedals | VP VPE 536 |
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Merida Big Seven 2026 Size Chart
|
Frame Size |
Height cm |
Height Feet / Inches |
|
XS |
< 163 cm |
<5’4” |
|
S |
157 - 173 cm |
5’2” – 5’8” |
|
M |
167 - 183 cm |
5’6” – 6’0” |
|
L |
177 - 190 cm |
5’10” – 6’3” |
|
XL |
187 - 196 cm |
6’2” – 6’5” |
|
XXL |
> 192 cm |
>6’4” |
What size frame do I need if I am between sizes? - read here
Merida Big Seven 2026 Geometry Chart
| Size | XS | S | M |
|---|---|---|---|
| Stack | 563 | 577 | 591 |
| Reach | 378 | 394 | 409 |
| Head Tube Length | 100 | 115 | 130 |
| Head Tube Angle | 69 | 69 | 69 |
| Bottom Bracket Drop | 30 | 30 | 30 |
| Fork Length | 487 | 487 | 487 |
| Chainstay Length | 430 | 430 | 430 |
| Wheelbase | 1056 | 1078 | 1099 |
| Top Tube Length (horizontal) | 550 | 570 | 590 |
| Standover Height | 649 | 689 | 740 |
| Seat Tube Length | 340 | 380 | 440 |
| Seat Tube Angle | 73 | 73 | 73 |
| Tyre Size | 27.5" | 27.5" | 27.5" |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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Get this on cycle to work
Save up to £273.00
Cycle to work is a government funded salary sacrifice scheme which allows you to spread the cost of purchasing a bike and equipment and save on Income Tax and National Insurance.
Lower Tax Rate | Higher Tax Rate | |
|---|---|---|
Monthly pre-tax cost | £54.17 | £54.17 |
Monthly cost to you | £39.00 | £31.42 |
Total cost over 12 mths | £468.00 | £377.00 |
Total savings | £182.00 | £273.00 |
The calculations provided here are based on a monthly pay frequency and will vary depending on your personal taxation and your employers scheme.
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