| Monday | 9.00am - 5.30pm | 
| Tuesday | 9.00am - 5.30pm | 
| Wednesday | 9.00am - 5.30pm | 
| Thursday | 9.00am - 5.30pm | 
| Friday | 9.00am - 5.30pm | 
| Saturday | 9.00am - 5.30pm | 
| Sunday | 10.00am - 4.00pm | 
| Bank Holidays | 10.00am - 5.00pm | 
2026 Merida Reacto 4000 Road Bike in Silk Black
Click & Collect - Always fast, easy & free
Select Click & Collect at checkout and pick up your order at a convenient location
| Monday | 9am - 5.30pm | 
| Tuesday | 9am - 5.30pm | 
| Wednesday | 9am - 5.30pm | 
| Thursday | 9am - 5.30pm | 
| Friday | 9am - 5.30pm | 
| Saturday | 9am - 5.30pm | 
| Sunday | 10am - 4.00pm | 
| Bank Holidays | 10am - 4.00pm | 
| Monday | 8am - 6.00pm | 
| Tuesday | 8am - 6.00pm | 
| Wednesday | 8am - 6.00pm | 
| Thursday | 8am - 6.00pm | 
| Friday | 8am - 6.00pm | 
| Saturday | 9am - 5.30pm | 
| Sunday | 10am - 4.00pm | 
| Bank Holidays | 10am - 5.00pm | 
Entry level carbon aero bike with race proven ProTour geometry CF3 carbon frame equipped with Shimano 105 2 x 12 speed mechanical groupset and hydraulic disc brakes.
The Reacto has always been a class leading aero bike, combining state of the art aerodynamics with rider comfort. The latest generation incorporated wider tyres for increased comfort, but adding wider tyres resulted in aerodynamic compromises so a myriad of small improvements were required to over-compensate. In the World Tour no area can be ignored. Computational Fluid Dynamics (CFD) was used to model virtual wind tunnel performance, guiding the changes which offered the most aerodynamic benefit: Tiny details like integrating the front Disc Cooler behind the fork and the rear disc caliper in the rear triangle and creating new bolt through axles with the thread integrated into the fork dropout minimise drag and improve aerodynamic performance. The Reacto CF5 needs just 209 watts effort for 45 km/h speed, All Reacto have powerful hydraulic disc brakes with chainstay mounted calipers for better brake force dissipation. The flat mount standard keeps everything neat whilst sitting calipers on CNC'd aluminium Disc Cooler fins helps reduce operating temperatures by up to 35%. Cycling Weekly described it as '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'.
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £25 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
Find Out More About Returns >
 
| bottom bracket | Shimano SM-BB71-41B; Pressfit 86.5 | 
| brakes | Front: Shimano 105; Hydraulic disc with Shimano RT54; 160mm Rear: Shimano 105; Hydraulic disc with Shimano RT54; 160mm | 
| brake levers | Shimano 105 | 
| cassette | Shimano 105 R7101; 11-34 teeth; 12 speed | 
| chain | Shimano M6100-12 | 
| crankset | Shimano 105 R7100; 52-36 tooth chainset; Crank length: XXXS - 160mm, (XXS-XS) - 165mm, (S-M) - 170mm, (L-XL) - 172.5mm | 
| fork | Reacto CF3 IV Disc; material: carbon; 700x30C max. tyre size | 
| 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 | 
| grips | Merida Road Expert | 
| handlebars | Merida Expert CW; material: aluminium; (XXXS-S) - 380mm wide, (M-L) - 400mm wide, XL - 420mm wide | 
| headset | Merida Team SL (OP-203 neck) | 
| rear derailleur | Shimano 105; GS | 
| saddle | Merida Expert SL; 6% recycled and 23% nature material; V-mount; incl. Merida minitool | 
| seatpost | Merida Team CW; Aero shape; 15mm layback; material: carbon | 
| shifters | Front: Shimano 105 disc, Rear: Shimano 105 disc | 
| tyres | Front: Continental Grand Prix; 700x28C; kevlar bead Rear: Continental Grand Prix; 700x28C; kevlar bead | 
| wheelset | 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 | 
Please note the following size guides are a general overview and represent a rough guide to bike sizing. Each bike may deviate from these figures.
Road Bikes
| Size | XXS | XS | S | M | L | XL | XXL | 
| Height (cm) | 155 - 160 | 160 - 166 | 167 - 172 | 173 - 179 | 180 - 185 | 186 - 191 | 192 - 207 | 
Mountain Bikes
| Size | XS | S | M | L | XL | 
| Height (cm) | 145 - 160 | 150 - 165 | 160 - 175 | 170 - 185 | 180 - 200 | 
Hybrid & Urban Bikes
| Size | XS | S | M | L | XL | 
| Height (cm) | 150 - 160 | 160 - 170 | 170 - 180 | 180 - 190 | 190 - 200 | 
 
 

 
                                 
                                 
                                 
                                 
 
 
 

 
 

 
 

 
 
