Merida's heartland has always been tough, dependable aluminium hardtails, and half a century of frame-building experience shows in the Big Nine 20. It's a great-value 29er that's ready for trail riding, fitness rides and getting into mountain biking properly.
Every Big Nine and Big Seven uses Merida's TFS aluminium frame, with full internal cable routing for a clean setup, a tapered head tube that leaves room for future fork upgrades and inboard disc brake mounts that protect the brake and maximise stopping power. As much Shimano componentry as possible is fitted to complement the frame and boost reliability, including the 1x8 drivetrain, chainset and hubs, while a 100mm lockout fork and hydraulic disc brakes give you control on the trail.
The Big Nine suits taller riders and the Big Seven shorter riders, with plenty of overlap. If you're in between, choose the Big Nine for speed and efficiency or the Big Seven for agility.
Features
- TFS IV double butted 6061 aluminium frame
- Tapered head tube and full internal cable routing
- 100mm SR Suntour XCT30 coil fork with lockout
- Simple Shimano ESSA 1x8 drivetrain with wide 11-45T cassette
- Tektro hydraulic disc brakes with 160mm rotors
- Shimano hubs and chainset for reliability
- Mudguard and kickstand mounts
Specifications
DisciplineTrail/
XC MaterialAluminium
Front Travel100mm
Rear TravelHardtail
Wheel Size29"
WarrantyLifetime (frame)
Frame - TFS IV, 6061 aluminium, double butted and technoformed. Tapered head tube. Chainstay mounted disc brake. Internal cable routing. Mudguard and kickstand mounts. BSA threaded BB. 135x9mm axle. Max tyre size 29x2.25"
Fork - SR Suntour XCT30 HLO; Coil; 100mm travel; lockout; max tyre size 29x2.25"
Gears - 8
Shifters - Shimano ESSA SL-315-8
Rear derailleur - Shimano ESSA RD-U2000-8; GS
Bottom bracket - Shimano BB-UN101 73-123
Chain - KMC Z8.3
Chainset - Shimano ESSA FC-U2001 32 tooth; aluminium; crank length 170mm (S), 175mm (M and up)
Cassette - Shimano CS-HG400-8; 11-45 teeth; 8 speed
Brake lever - Tektro M275
Front brake - Tektro HD-M275; hydraulic disc brake caliper with Shimano RT10; 160mm rotor
Rear brake - Tektro HD-M275; hydraulic disc brake caliper with Shimano RT10; 160mm rotor
Grips - Merida EC
Handlebar - Merida CC; aluminium; 690mm wide; 15mm rise
Stem - Merida CC; aluminium; 31.8mm diameter; 6 degree rise; length 70mm (S), 80mm (M), 90mm (L), 100mm (XL), 110mm (XXL)
Headset - Merida M2345
Pedals - VP VPE-891
Saddle - Merida Sport comfort
Seatpost - Merida CC; 30.9mm diameter; 15mm layback; aluminium
Wheel size - 29"
Rims - Merida CC; 17mm inner rim width; aluminium
Spokes - Black steel
Front hub - Shimano TX505; 100x9mm; 32 spoke; Centerlock
Rear hub - Shimano TX505; 135x9mm; 32 spoke; Centerlock
Front tyre - Merida K1080; 29x2.2"; wire bead
Rear tyre - Merida K1080; 29x2.2"; wire bead
Big Nine 20 2025
- XC / Trail
- Hardtail · 100mm fork
- 29″ wheels
- Alloy frame
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90 Day Returns
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Pro builtBuilt and safety-checked by our mechanics before it leaves us
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Free UK mainland courier deliveryNorthern Ireland: £60
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Collect in CanterburyPick up and get set up at our store
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Talk to a riderChat with our team
Merida's heartland has always been tough, dependable aluminium hardtails, and half a century of frame-building experience shows in the Big Nine 20. It's a great-value 29er that's ready for trail riding, fitness rides and getting into mountain biking properly.
Every Big Nine and Big Seven uses Merida's TFS aluminium frame, with full internal cable routing for a clean setup, a tapered head tube that leaves room for future fork upgrades and inboard disc brake mounts that protect the brake and maximise stopping power. As much Shimano componentry as possible is fitted to complement the frame and boost reliability, including the 1x8 drivetrain, chainset and hubs, while a 100mm lockout fork and hydraulic disc brakes give you control on the trail.
The Big Nine suits taller riders and the Big Seven shorter riders, with plenty of overlap. If you're in between, choose the Big Nine for speed and efficiency or the Big Seven for agility.
Features
- TFS IV double butted 6061 aluminium frame
- Tapered head tube and full internal cable routing
- 100mm SR Suntour XCT30 coil fork with lockout
- Simple Shimano ESSA 1x8 drivetrain with wide 11-45T cassette
- Tektro hydraulic disc brakes with 160mm rotors
- Shimano hubs and chainset for reliability
- Mudguard and kickstand mounts
Specifications
DisciplineTrail/
XC MaterialAluminium
Front Travel100mm
Rear TravelHardtail
Wheel Size29"
WarrantyLifetime (frame)
Frame - TFS IV, 6061 aluminium, double butted and technoformed. Tapered head tube. Chainstay mounted disc brake. Internal cable routing. Mudguard and kickstand mounts. BSA threaded BB. 135x9mm axle. Max tyre size 29x2.25"
Fork - SR Suntour XCT30 HLO; Coil; 100mm travel; lockout; max tyre size 29x2.25"
Gears - 8
Shifters - Shimano ESSA SL-315-8
Rear derailleur - Shimano ESSA RD-U2000-8; GS
Bottom bracket - Shimano BB-UN101 73-123
Chain - KMC Z8.3
Chainset - Shimano ESSA FC-U2001 32 tooth; aluminium; crank length 170mm (S), 175mm (M and up)
Cassette - Shimano CS-HG400-8; 11-45 teeth; 8 speed
Brake lever - Tektro M275
Front brake - Tektro HD-M275; hydraulic disc brake caliper with Shimano RT10; 160mm rotor
Rear brake - Tektro HD-M275; hydraulic disc brake caliper with Shimano RT10; 160mm rotor
Grips - Merida EC
Handlebar - Merida CC; aluminium; 690mm wide; 15mm rise
Stem - Merida CC; aluminium; 31.8mm diameter; 6 degree rise; length 70mm (S), 80mm (M), 90mm (L), 100mm (XL), 110mm (XXL)
Headset - Merida M2345
Pedals - VP VPE-891
Saddle - Merida Sport comfort
Seatpost - Merida CC; 30.9mm diameter; 15mm layback; aluminium
Wheel size - 29"
Rims - Merida CC; 17mm inner rim width; aluminium
Spokes - Black steel
Front hub - Shimano TX505; 100x9mm; 32 spoke; Centerlock
Rear hub - Shimano TX505; 135x9mm; 32 spoke; Centerlock
Front tyre - Merida K1080; 29x2.2"; wire bead
Rear tyre - Merida K1080; 29x2.2"; wire bead
Returns Information
Reviews
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