Name: Merida Silex 4000 2025 - Gravel Bike
Brand: Merida

Built for off-road handling with a carbon CF2 frame and Shimano GRX components, the Silex 4000 combines MTB-inspired geometry with the spirit of exploration. With generous tyre clearance, five bottle mounts, and smooth-riding disc brakes, this bike is ready for the road less travelled.

Key Features:

Frame: CF2 carbon, gravel geometry, tyre clearance up to 45c
Fork: Full carbon, tapered steerer, accommodates 45c tyres
Drivetrain: Shimano GRX400, 10-speed, gravel-specific design
Brakes: Shimano GRX400 hydraulic discs, 180mm rotors for optimal stopping power
Wheels: Merida Expert SLII, tubeless-ready aluminium
Tyres: Maxxis Rambler 700x45C, EXO tread for enhanced grip
Other Standout Feature: Multiple mounting points for bottles and racks
Available with 0%APR finance

With a design rooted in MTB handling principles, the Silex 4000 offers a stable and confident ride off-road, alongside the versatility for multi-day adventures. The carbon frame’s Disc Cooler technology ensures optimal braking performance, while the Shimano GRX drivetrain provides reliable shifting on varied terrains.

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

Merida Silex 2025 Size Chart

Size	Rider Height (Inch)	Rider Height (cm)
XS	5'3" – 5'5"	162 – 167
S	5'4" – 5'9"	165 – 177
M	5'7" – 5'11"	173 – 185
L	5'10" – 6'2"	181 – 192
XL	6'1" – 6'5"	188 – 200

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

Merida Silex 2025 Geometry Chart

Size	XS	S	M	L	XL
Tyre Size	28"	28"	28"	28"	28"
Seat Tube Length (alloy frame)	440	470	500	530	560
Top Tube Length (horizontal)	550	565	580	600	620
Chainstay Length	430	430	430	430	430
Head Tube Angle	69.5°	69.5°	69.5°	69.5°	69.5°
Seat Tube Angle	74.5°	74.5°	74.5°	74.5°	74.5°
Bottom Bracket Drop	75	75	75	75	75
Head Tube Length	130	150	170	190	210
Fork Length	415	415	415	415	415
Reach	392	402	412	426	441
Stack	570	588	607	626	645
Wheelbase	1048	1065	1082	1104	1126
Standover Height	744	771	798	825	852
Seat Tube Length (carbon frame)	460	490	520	550	580

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.

Frame	CF2 carbon II, gravel geometry for stable but nimble handling. Tapered head tube Inboard disc mounts. Threaded BB, 142 x12mm axle standard, disc cooler technology, Max tyre size 700 x 45c (42c with mudguards)
Fork	Silex CF2 II; Full carbon; tapered steerer, 100 x12mm axle standard; Max tyre size: 700 x 45c (42c with mudguards)
Headset	320.52.631
Stem	Merida Team CC III; aluminium; 31.8mm diameter; -6 degree rise - Length - 80mm (all sizes)
Bars	Merida Expert GRII; aluminium; 400mm (XS-S) , 420mm (M) , 440mm (L/XL)
Front Brake	Shimano GRX400; Hydraulic disc brake caliper with Shimano RT10; 180mm rotor
Rear Brake	Shimano GRX400; Hydraulic disc brake caliper with Shimano RT10; 180mm rotor
Brake Lever	Shimano GRX400
Front Mech	Shimano GRX400
Rear Mech	Shimano GRX400
Shifters	Shimano GRX400
Speed	20
Rims	Merida Expert SLII; 23mm inner rim width; 25 mm rim depth; aluminium; Tubeless ready (tubeless tape and valves not included)
Front Hub	Shimano HB-TC500; 100 x 12mm; 28 spoke; Centerlock
Rear Hub	Shimano FH-TC500-HL; 142 x 12mm; 28 spoke; Centerlock
Spokes	Black stainless
Front Tyre	Maxxis Rambler; 700 x 45C; Kevlar bead; TR; EXO
Rear Tyre	Maxxis Rambler; 700 x 45C; Kevlar bead; TR; EXO
Seat Post	Merida Expert CC; 27.2mm diameter; 15mm layback; Carbon
Saddle	Merida Comp SL; V-mount - made with 25% recycled material
Chainset	Shimano GRX600; 46-30 tooth chainset; Crank length - 170mm (XS/S), 172.5mm (M), 175mm (L/XL)
Bottom Bracket	Attached
Chain	KMC X10
Cassette	Shimano CS-HG50; 11-36 teeth; 10 speed
Pedals	Resin Platform

Won't Be Beaten

Merida Silex 4000 2025 - Gravel Bike

Merida Silex 2025 Size Chart

Merida Silex 2025 Geometry Chart

Merida Silex 4000 2025 - Gravel Bike