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Merida Reacto Team-E 2021



Very fast, very stiff and very fun to ride – the Reacto Team-E is an excellent race bike
Loads of stiffness for bigger riders
Incredibly fast
Priced well against rivals
Wheelset is a little sluggish

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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Merida's 2021 Reacto Team-E road bike is a race thoroughbred that excels on flat and rolling terrain. The straight line speed, stiffness and handling are all brilliant, but the ride may be too firm for some.

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I said in my first ride review that this is unapologetically a 'race bike,' and I'm sticking with that. Comfort is the last thing on the Reacto's mind, with the focus being entirely on speed. Kick the pedals round and the bike reacts with a surge befitting the superbike price.

2021 Merida Reacto Disc Team-E - riding 4.jpg

Merida says that weight was one of the primary concerns when moving the Reacto to more of an all-round race bike and away from just an aero rig. At 7.5kg on our scales for this size small, there is still some room before you worry the UCI's 6.8kg minimum weight rule, but I'd say it feels plenty lightweight enough.

2021 Merida Reacto Disc Team-E - UCI sticker.jpg

There are a couple of component changes you could make to bring that weight down, but we'll get to that later.

The low weight certainly helps get you up to speed, but the Reacto really reaches its happy place cruising the flatlands around 40kph and above. The new aero claims aren't massively impressive, but the Reacto was a fast bike already, so saving a whopping two watts because the cables are now hidden is just a little bonus.

2021 Merida Reacto Disc Team-E - riding 5.jpg

Eventually in the Mendips, you do have to climb a hill or two, though admittedly, I aim for them. Climbing really isn't a problem on these more 'modern' aero bikes. The Reacto feels light and climbs just as hard as you want to go.

In fact, I was dead impressed by the Reacto on the faster climbs or where the gradient levels out to around 4%. The Reacto really comes alive when you shift into the big ring, holding onto momentum very well.

2021 Merida Reacto Disc Team-E - riding 2.jpg

A notable ride feature I mentioned before is how stiff the Reacto is, particularly the rear end. While a little messing around with tyre pressures led me away from my initial observation that the rear end was harsh, it's still a bike that focuses far more on putting your power onto the road than about giving you a comfortable ride.

2021 Merida Reacto Disc Team-E - chain stay.jpg

Most of my riding has taken me around the roads of Somerset and the majority are surfaced with that lovely gravel dressing. As a result, any stiffness is magnified and usually felt through my hands, feet and posterior. I have been feeling those roads far more on this bike than on others. My Specialized Venge certainly feels smoother, though I still wouldn't call it a comfortable bike.

2021 Merida Reacto Disc Team-E - frame details.jpg

The Reacto isn't harsh, but you should know what you're getting into. Merida designed this as a full-on race bike and while they may have worked to increase comfort, it is still a single-minded speed machine.

Despite the high stiffness that can sometimes result in rather jittery cornering, the Reacto is very impressive when you really push it through the bends. The long and low position helps you get your own centre of gravity low, load the front tyre and carve through turns.


The single-minded speed machine description extends to the geometry, but the long and low position is perfect for this bike, helping you get as aero as possible. I am young, quite flexible and used to riding race bikes so the position wasn't an issue for me. If you're looking for a bike for long, relaxed days in the saddle, though, this isn't it.

2021 Merida Reacto Disc Team-E - head tube badge.jpg

I really like the steep head tube and seat tube that combine to give the Reacto handling the feels very on-edge. It is certainly lively, with a tight wheelbase adding to the whip-sharp handling.

2021 Merida Reacto Disc Team-E 2.jpg

Overall you're getting what Merida says the Reacto is. It's a fast bike with loads of stiffness, direct handling, a decently low weight and just enough comfort to make longer days and rough roads doable.

Frame and fork

Merida uses its CF5 IV carbon for both the frame and fork, and they've been redesigned for this 2021 model.

2021 Merida Reacto Disc Team-E - fork 2.jpg

The changes can mostly be found at the front where the cables now stay hidden from the wind, entering the frame behind the upper headset bearing. It's a very clean aesthetic and a move that most bike manufacturers have been making in the last few years.

2021 Merida Reacto Disc Team-E - stem.jpg

Merida says the cable integration is more aero, but doesn't specify how many watts have been saved, so you'll have to make do with how nice it looks. Moving down a little, the fork crown now sits slightly deeper into the down tube, which Merida says saves two watts.

2021 Merida Reacto Disc Team-E - front.jpg

The seatstays have also been dropped slightly, but apart from that, the frame is very similar to the outgoing model.

2021 Merida Reacto Disc Team-E - rear.jpg

That's not a bad thing though. The Reacto continues with the massive chainstay design that meets an equally chunky bottom bracket shell housing a BB86.5 bearing system.

2021 Merida Reacto Disc Team-E - bottom bracket.jpg

There are upsides and downsides to this press-fit system. They are supposedly stiffer than a threaded one, but while you might not be able to tell the difference in stiffness, you can always hear a problem bottom bracket. Thankfully, the Reacto has been making no funny noises.

The seat clamp is neatly integrated into the top tube and the seatpost, which gave me a bit of a headache when the bike arrived, is behaving itself now. No more mallets have been employed.

2021 Merida Reacto Disc Team-E - seat post bolt.jpg

The seatpost has a cutout designed to add compliance right under the saddle, and Merida uses this space for a small rear light. I found it a little useless, personally, as it was covered by my saddle bag. The light is also rather dim and runs on an AA battery, so don't expect it to last for hours.

2021 Merida Reacto Disc Team-E - integrated rear light.jpg

While I wouldn't use it normally, it is at least a handy safety feature for when it goes dark faster than you expected. These past few weeks I've been caught out a couple of times and it has worked well enough.

2021 Merida Reacto Disc Team-E - rear dsic brake.jpg

The finishing touches of flat mount callipers and thru-axle dropouts are standard fare.


Shimano's Dura-Ace R9170 groupset brings together the exceptional shifting quality of Di2 electronics and the all-weather predictability of hydraulic discs. A lot has already been said about this groupset, and it's due an update soon, so we won't dwell on it. What I will say, though, is that the performance increase over Ultegra Di2 is marginal.

2021 Merida Reacto Disc Team-E - front mech.jpg

I've also been riding SRAM Red eTap AXS lately, and I prefer Shimano by far. There may only be a fraction of a second's difference in the shift speed, but it makes all the difference for me. That said, I'd urge you to try both systems if you can. Stu would give his money to SRAM, see which one works for you.

2021 Merida Reacto Disc Team-E - crank.jpg

Interestingly – and this is one area where Merida has Specialized beaten – a Shimano power meter is included. This dual-sided design has had its faults but seems to be sorted now, and provides me with data consistent with that of the SRAM Red AXS power meter and my dual-sided 4iiii. While I can't comment on the overall accuracy, it's consistent, and I found it easy to set up once connected to a Garmin head unit.

2021 Merida Reacto Disc Team-E - power meter.jpg

The reason Merida has Specialized and Trek beaten here is that this build comes in at £9,000. That's still a huge chunk of change, but it's far cheaper than the equivalent bikes from the two American brands.

2021 Merida Reacto Disc Team-E - bar and lever.jpg

Attached to the brake calliper area are the disc coolers, two heat sinks Merida claim improved performance through better cooling. Personally, I haven't felt much of a difference during normal riding.

2021 Merida Reacto Disc Team-E - front disc brake.jpg

The rotors still catch a little after heavy braking and it is telling that the Bahrain Merida pros seem to have removed theirs. Or, strictly speaking, had the mechanics remove them.

There are better steps to improving your braking. SwissStop pads and in particular, their rotors, are a great upgrade. The rotors don't flex like the Dura-Ace rotors do, though they do add a little weight. They're quieter too.


Vision provides the integrated bar/stem in the form of the 5D. I absolutely love the 5D, finding the shape of the drops very comfortable yet secure for sprint efforts. The bar features a distinct forward swoop to the clamp area, giving quite a long reach that I found ideal for this long and low position.

2021 Merida Reacto Disc Team-E - bars.jpg

There's absolutely no flex when ripping the bike from side to side in a sprint, yet this stiffness doesn't translate to a harshness on the hands. The 5D is also properly integrated and comes with all the holes required for Di2, making a tidy setup very easy to achieve.


Vision also provides the wheels, but I'm not so impressed with these. They're plenty fast enough when up to speed on flat roads, but the weight make them a little sluggish when accelerating, and hampers climbing performance too.

2021 Merida Reacto Disc Team-E - rim 2.jpg

Dave Arthur reviewed the Metron 55 SL Disc clincher wheelset separately, and I have to say I agree with his findings. These are good, but not the best.


Much was made of the replacement to the GP4000S II, but Continental's GP5000 clincher tyres haven't blown me away.

2021 Merida Reacto Disc Team-E - rim 1.jpg

Sure, they're pretty predictable in the corners and they do very well in the rain, but when you come from a 350tpi casing, three layers of 180tpi casing feels very dull.


I always like to end on a positive note and the Prologo Scratch M5 has been fabulous. It's the first saddle without an open central cutout that I've got on with, and despite several four-hour rides I've had no discomfort at all.

2021 Merida Reacto Disc Team-E - saddle.jpg

The shape is stubby with a slight contour from back to front. It's designed for riders who want to get low and it does its job perfectly, supporting me as I did my best to lay down the power.

2021 Merida Reacto Disc Team-E - saddle nose.jpg

The middle section is slightly softer, and the shell has just enough give in the wings to move with you a little.


I've already touched on value. The Dura-Ace Di2 Specialized S-Works Tarmac SL7 is £10,500, while the equivalent Trek Emonda SLR 9 is £9,700 and the Madone SLR 9 is £11,350. Amongst the latest aero race bikes, the Reacto represents a decent saving then, and does it with a very similar spec.

2021 Merida Reacto Disc Team-E - top tube 1.jpg

Each bike gets some form of aero front end, deep carbon wheels, Shimano's Dura-Ace Di2 groupset and the Dura-Ace power meter.

> 14 of the best carbon fibre road bikes - from £999 to £10,000

If you have this kind of money to put down on a superbike then I'd urge you to try each bike before making a decision. One is going to fit you best, allowing you to tuck down comfortably into an aero position, and despite all the aero claims, the biggest impact is still your body.

2021 Merida Reacto Disc Team-E - bars 2.jpg


I've been incredibly impressed by the stiffness of the 2020 Reacto Team-E. Combine this with the race-orientated geometry and superb handling and you have yourself a brilliant race bike. I wouldn't call this the comfiest racer I've ridden, though, so if you ride rough roads or want a little bit of comfort, then you may wish to look elsewhere.


Very fast, very stiff and very fun to ride – the Reacto Team-E is an excellent race bike test report

Make and model: Merida REACTO TEAM-E

Size tested: XS/53cm

About the bike

List the components used to build up the bike.





BRAKE FRONT Shimano Dura Ace

BRAKE REAR Shimano Dura Ace


ROTOR REAR Shimano RT900

BRAKE LEVER Shimano Dura Ace disc




GRIP One-Touch

DERAILLEUR (F) Shimano Dura Ace Di2

DERAILLEUR (R) Shimano Dura Ace Di2

SHIFTER FRONT Shimano Dura Ace disc Di2

SHIFTER REAR Shimano Dura Ace disc Di2




CHAIN Shimano CN-HG901-11

CHAINWHEEL Shimano Dura Ace, Power Meter

CRANK SIZE 165 mm-XSS, 170 mm-XS/S, 172.5 mm-M, 175 mm-L/XL

FREEWHEEL Shimano CS-9100

BOTTOM BRAKET SM-BB92-41B, Presfit 86.5


TIRE FRONT Continental Grand Prix 5000

TIRE REAR Continental Grand Prix 5000


SPOKES attached

LIGHT REAR REACTO light seat post + Battery

Tell us what the bike is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about the bike?

"The king is dead, long live the king!" says Merida of the seemingly improved, not overhauled 2021 Reacto. Merida seems to suggest a move away from all-out aero to more of all-rounder, something that we're seeing a lot of recently.

Merida says it "will once again deliver tons of fun and begs you to ride fast – all the time."

"With a clean design, optimised aerodynamics, cockpit cable integration, tyre clearance for up to 30 mm wide tyres, the well-proven Merida S-Flex seat post for maximum comfort and – for an aero road bike – very lightweight frame, it offers everything a modern aero bike needs to bring to the table."

Where does this model sit in the range? Tell us briefly about the cheaper options and the more expensive options

We're at the very top end here. You could easily save cash without much of a performance hit by getting the Ultegra Di2 version.

Frame and fork

Overall rating for frame and fork

Tell us about the build quality and finish of the frame and fork?

The only issue I had was a temporarily stuck seatpost. A mallet soon sorted the problem and it is now behaving itself.

Tell us about the materials used in the frame and fork?

Merida's CF5 carbon for the frame and fork.

Tell us about the geometry of the frame and fork?

It is long and very low – the perfect recipe for a race bike and I absolutely love it.

How was the bike in terms of height and reach? How did it compare to other bikes of the same stated size?

I found it very comparable to my S-Works Venge. It's long and low, so you should know you're buying an unapologetic race bike.

Riding the bike

Was the bike comfortable to ride? Tell us how you felt about the ride quality.

The ride treads a thin line between stiff and a bit harsh. If the roads are mostly good in your area, you'll be fine.

Did the bike feel stiff in the right places? Did any part of the bike feel too stiff or too flexible?

There's no chance of this being too flexible. If anything, the rear kicks a little harshness through.

How did the bike transfer power? Did it feel efficient?

Stamp on the pedals and you move forward very quickly. The bike transfers power exceptionally well.

Was there any toe-clip overlap with the front wheel? If so was it a problem?

Yes, but I expect that with a race bike with a tight wheelbase. It isn't a problem.

How would you describe the steering? Was it lively neutral or unresponsive? Very lively.

Tell us some more about the handling. How did the bike feel overall? Did it do particular things well or badly?

I have been massively impressed through tight corners.

Which components had the most effect (good or bad) on the bike's comfort? would you recommend any changes?

I would have liked some supple tyres. The GP5000 tyres feel very dull.

Which components had the most effect (good or bad) on the bike's stiffness? would you recommend any changes?

That Vision 5D bar/stem isn't budging at all. It is excellent.

Which components had the most effect (good or bad) on the bike's efficiency? would you recommend any changes?

The weight of the wheels means acceleration from low speed isn't great. Climbing on steep gradients is a bit slow too.

Rate the bike for efficiency of power transfer:
Rate the bike for acceleration:

Better wheels and this would have been top marks.

Rate the bike for sprinting:

Great when sprinting from a faster speed.

Rate the bike for high speed stability:
Rate the bike for cruising speed stability:
Rate the bike for low speed stability:
Rate the bike for flat cornering:
Rate the bike for cornering on descents:
Rate the bike for climbing:

The drivetrain.

Rate the drivetrain for performance:
Rate the drivetrain for durability:
Rate the drivetrain for weight:
Rate the drivetrain for value:

Ultegra Di2 is tiny bit heavier, far cheaper, and gives essentially the same performance.

Tell us some more about the drivetrain. Anything you particularly did or didn't like? Any components which didn't work well together?

Dura-Ace Di2 shifting and hydraulic brakes are brilliant – I far prefer this system to SRAM. The Dura-Ace disc rotors aren't my favourites, though. They're a bit flexible and can rub quite easily.

Wheels and tyres

Rate the wheels for performance:
Rate the wheels for durability:
Rate the wheels for weight:
Rate the wheels for comfort:
Rate the wheels for value:

Tell us some more about the wheels.Did they work well in the conditions you encountered? Would you change the wheels? If so what for?

This is where I would make my first change. They're just a bit too heavy for the depth. Roval's new Rapide CLX wheels look very good, but Hunt's Aerodynamicist hoops would get my money.

Rate the tyres for performance:
Rate the tyres for durability:
Rate the tyres for weight:
Rate the tyres for comfort:
Rate the tyres for value:

Tell us some more about the tyres. Did they work well in the conditions you encountered? Would you change the tyres? If so what for?

I might be a tyre snob, but the casing here just feels so stiff. Give me a 300tpi+ casing any day.


Rate the controls for performance:
Rate the controls for durability:
Rate the controls for weight:
Rate the controls for comfort:
Rate the controls for value:

Tell us some more about the controls. Any particularly good or bad components? How would the controls work for larger or smaller riders?

Vision's 5D bar is brilliant. Stiff, compliant and a comfortable shape.

Anything else you want to say about the componentry? Comment on any other components (good or bad)

That Prologo saddle has been very comfortable.

Your summary

Did you enjoy riding the bike? Yes, when the tarmac was decent

Would you consider buying the bike? I think our local roads are just a bit too harsh

Would you recommend the bike to a friend? Yes

How does the price compare to that of similar bikes in the market, including ones recently tested on

I know, it's still £9,000 but it actually stacks up pretty well against the latest Trek and Specialized offerings.

Rate the bike overall for performance:
Rate the bike overall for value:

Use this box to explain your overall score

It's a great race bike, very stiff, will suit bigger riders and handles brilliantly. There are still a few spec changes I'd make and it can be a bit harsh on tarmac that isn't perfect, though, so it's an eight.

Overall rating: 8/10

About the tester

Age: 24  Height: 177cm  Weight: 62kg

I usually ride: Cannondale Supersix Di2  My best bike is:

I've been riding for: 5-10 years  I ride: Most days  I would class myself as: Expert

I regularly do the following types of riding: road racing, time trialling, cyclo cross, commuting, club rides, general fitness riding, I specialise in the Cafe Ride!

Add new comment


Cyclespeed Tours | 3 years ago

isn't this just a rebadged sL7?

Prosper0 | 3 years ago

First thing I'd do is save the grams and loose the daft extra brake cooling fins.

If a regular punter zipping around the Surrey Hills is cooking the 160mm ICE Tech rotors on their Reacto E, they're doing something very seriously wrong. 

Nick T | 3 years ago

Is it an E-bike or have they just given it a fucking stupid name 

mdavidford replied to Nick T | 3 years ago

It's 'E' for electronic, which probably made perfect sense when they started using it.

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