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Merida Reacto 4000 - Purple 2025

£1,799.00 £2,400.00

Our REACTO 4000 might be the most affordable aero bike in our range but is far from being an entry-level bike. Featuring our lightweight CF3 frame with race-proven geometry, the 4000 offers impressive comfort due to the generous tyre clearance (up to 30 mm tyres) and the fitted S-FLEX carbon seat post. At the same time, the latest super smooth mechanical 12-speed Shimano 105 groupset keeps shifting in braking and perfect check. This is the ideal aero bike for your first steps into the racing world as well as challenging club rides.

Unadulterated aero road speed. The latest version of the REACTO took the cycling press by storm. A long string of test wins, perfect scores and awards confirm our successful symbiosis of the race-proven DNA of the previous model with the latest trends and technologies. Cycling Weekly calls it 'without doubt one of the most complete bikes available on the market', Cyclingnews 'an utterly brilliant and faultless machine' and Cycling Plus were 'hugely impressed'. From serious racer via enthusiast to the ambitious road rider, the REACTO is a great bike for many people. Its outstanding aerodynamic performance, reduced weight, sharp handling and super quick acceleration makes it the perfect bike for criterium racers and sprinters. At the same time, the class-leading comfort gives it the ability to play out its aerodynamic advantage also on the cobblestones – or the idyllic but potholed littered lanes of your favourite training ride.

Our REACTO 4000 might be the most affordable aero bike in our range but is far from being an entry-level bike. Featuring our lightweight CF3 frame with race-proven geometry, the 4000 offers impressive comfort due to the generous tyre clearance (up to 30 mm tyres) and the fitted S-FLEX carbon seat post. At the same time, the latest super smooth mechanical 12-speed Shimano 105 groupset keeps shifting in braking and perfect check. This is the ideal aero bike for your first steps into the racing world as well as challenging club rides.

Unadulterated aero road speed. The latest version of the REACTO took the cycling press by storm. A long string of test wins, perfect scores and awards confirm our successful symbiosis of the race-proven DNA of the previous model with the latest trends and technologies. Cycling Weekly calls it 'without doubt one of the most complete bikes available on the market', Cyclingnews 'an utterly brilliant and faultless machine' and Cycling Plus were 'hugely impressed'. From serious racer via enthusiast to the ambitious road rider, the REACTO is a great bike for many people. Its outstanding aerodynamic performance, reduced weight, sharp handling and super quick acceleration makes it the perfect bike for criterium racers and sprinters. At the same time, the class-leading comfort gives it the ability to play out its aerodynamic advantage also on the cobblestones – or the idyllic but potholed littered lanes of your favourite training ride.

Specification

Frame

  • CF3 IV - carbon with the same geometry and aeroydanmic profiling as the CF5 IV with a more budget friendly carbon lay up. Tapered headtube, Disc Cooler, BB86 BB standard,142 x12mm axle standard. Max tyre size 700 x 30c

Fork

  • Reacto CF3 IV Disc; material: carbon; 700x30C max. tyre size

Gears

  • 24

Shifters

  • Front: Shimano 105 disc, Rear: Shimano 105 disc

Front Derailleur

  • Shimano 105

Rear Derailleur

  • Shimano 105; GS

Bottom Bracket

  • Shimano SM-BB71-41B; Pressfit 86.5

Chain

  • Shimano M6100-12

Chainset

  • Shimano 105 R7100; 52-36 tooth chainset; Crank length: XXXS - 160mm, (XXS-XS) - 165mm, (S-M) - 170mm, (L-XL) - 172.5mm

Cassette

  • Shimano 105 R7101; 11-34 teeth; 12 speed

Brake Lever

  • Shimano 105

Front Brake

  • Shimano 105; Hydraulic disc with Shimano RT54; 160mm

Rear Brake

  • Shimano 105; Hydraulic disc with Shimano RT54; 160mm

Grip

  • Merida Road Expert

Handlebar

  • Merida Expert CW; material: aluminium; (XXXS-S) - 380mm wide, (M-L) - 400mm wide, XL - 420mm wide

Stem

  • Merida Expert SL 2PII; material: aluminium; -9 degree rise; Length: (XXXS-XS) - 90mm, S - 100mm, (M-L) - 110mm, XL - 120mm

Head Set

  • Merida Team SL (OP-203 neck)

Pedal

  • Not included

Saddle

  • Merida Expert SL; 6% recycled and 23% nature material; V-mount; incl. Merida minitool

Seat Post

  • Merida Team CW; Aero shape; 15mm layback; material: carbon

Wheel Size

  • 700c

Rims

  • Merida Expert CW; 19mm inner rim width; 30mm rim depth

Spokes

  • Double Butted Black stainless

Front Hub

  • Shimano HB-TC500; 100x12mm; 28 spoke; Centerlock

Rear Hub

  • Shimano FH-TC500-HL; 12-142mm; 28 Spoke; Centerlock

Front Tyre

  • Continental Grand Prix; 700x28C; kevlar bead

Rear Tyre

  • Continental Grand Prix; 700x28C; kevlar bead

Colour

  • Silk Black (Glossy Dark Silver)

Season

  • 2026

Other

  • Disc cooler F/R and Merida Multitool with saddlebox