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- Lightweight aluminum frame construction
- 27.5-inch wheels for agility and speed
- Front suspension for enhanced comfort
- Hydraulic disc brakes for reliable stopping
- Versatile geometry for various terrains
The BIG.TRAIL is back and better than ever! Hailed by the international mountain bike press as one of the best trail hardtails around, Merida have further tweaked it so it goes up, down and along even faster - which obviously means more fun. With updated, progressive geometry, the new BIG.TRAIL builds on an incredibly successful heritage, with a slack head angle and extended reach helping tame the gnarliest trails and a steeper seat angle that makes climbing up to do it again a breeze. They’ve also given it a slicker and tricker look and improved the frame protection too, so it'll stay looking good for longer. Join the BIG.TRAIL family and enjoy hassle-free trail fun in spades.
A passion for trail fun, all wrapped up in a no-nonsense package. The BIG.TRAIL 500 offers handling that at inspires confidence and pushes you to go that little bit further in your search for true trail connection. Merida’s top-quality aluminium frame is paired a Rock Shox Psylo Silver RC Air 140mm travel fork, reliable 10 speed Shimano drivetrain and Shimano hydraulic disc brakes with a beefed up 4 piston front brake and burly 203mm rotor. A long travel dropper post adds confidence and capability to any ride while tough 29er Maxxis tyres round off this trail-ready package.
Accessories: | CHAINGUARD: MERIDA EXPERT TR ISCG05 |
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Axles: | REAR: MERIDA COMP TR; including removeable lever, 6/4mm allen key |
Brakes: | FRONT: Shimano MT410; 4 piston / REAR: Shimano MT4100; 2 piston |
Cassette: | Shimano LG300; 11-48 ATC; 10 GER |
Chain: | KMC xGlide |
Crankset: | MERIDA Expert TR II; 32 ATC 165mm XSHORT and SHORT; 170mm MID, LONG und XLONG |
Derailleur rear: | Shimano CUES U6000; GS |
Fork: | Rock Shox Psylo Silver RC; Air; 140 STR; platform |
Frame: | BIG.TRAIL TFS II; MAT aluminium; 29x2.5" max. WHS; 148x12 AST; BSA BBR |
Grip: | MERIDA COMP EC |
Handlebar: | MERIDA EXPERT TR II; MAT aluminium; 780 WHB; 18 RHB |
Handlebar stem: | MERIDA EXPERT eTRII; MAT aluminium; 35 DSH; 0 ASD 40 mm |
Headset: | Acros ICR MERIDA EXTERNAL neck; Upper and lower IPS sealing |
Hubs: | FRONT: Shimano TC500-B; 110x15 WHF; 32 SPH; Centerlock / REAR: Shimano TC500-HM-B; 148x12 WHR; 32 SPH; Centerlock |
Rim: | MERIDA COMP TR; 29 IWR; MAT aluminium; Tubeless ready (tubeless tape and valves not included) |
Rotor front: | Shimano RT30; 203mm |
Rotor rear: | Shimano RT30; 180mm |
Saddle: | MERIDA COMP SL; 25% recycled material; V-mount |
Season: | 2025 |
Seat clamp: | MERIDA EXPERT |
Seat post: | MERIDA EXPERT TR II; 34.9 DSP; 0 SSB; XS: 150 SPT,S: 170 SPT,M/L: 200 SPT,XL: 230 SPT |
Spokes: | Double Butted Black stainless |
Tyre front: | Maxxis Minion DHF; 29x2.5"; fold; TR EXO Dual |
Tyre rear: | Maxxis Dissector; 29x2.4"; fold; TR EXO Dual |
Weight: | APPROX. WEIGHT: 15.1 kg |
Wheel size: | 29" |
Merida Big Nine Bike Sizing Chart


Merida is an international bike brand with its headquarters in Taiwan, the R&D department is based near Stuttgart in Germany. To be based in Germany has historical reasons for MERIDA but the precise location was chosen specifically because the region around Stuttgart is one of the hot spots of the automotive and machine building industry which Germany is famous for and attracts a hugely skilled design and engineer labor force.
The Merida team are more than just highly trained and experienced bicycle creators – they simply love everything ‘bike’. Most of their R&D staff are daily bike commuters while others are serious mountain bikers, who regularly compete in Marathon, Enduro and Downhill competitions, or licensed road racers and even ambitious Ironman triathletes. Get the behind the scenes view of the Merida R&D centre and meet some of their key members of staff in the below video.
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Please note, due to challenges in the product supply chain, bike specifications are subject to change without notice. Specifications listed below may not match exactly as shown in the photo.