M1 Sporttechnik have been designing carbon mountain bikes since 1990. Over the past few years, the German manufacturer have shifted their focus onto eMTBs, adding a wide range of ebikes with different motor systems and battery capacities to their portfolio. We tested the EN.400.SX, which relies on a Bosch SX motor and 400 Wh battery. Is M1 Sporttechnik’s e-enduro bike just an exclusive toy, or does it hold up on the trail?

M1 Sporttechnik EN.400.SX | Bosch SX/400 Wh | 170/160 mm (f/r)
21 kg in size L | € 9,900 | manfacturer’s website

German manufacturer M1 Sporttechnik have always chosen to swim against the current, especially with their wild frame designs. However, their current ebike range, which we already had a chance to see at the latest EUROBIKE fair, relies on a more discrete design language. Since EUROBIKE 2023, M1 presented a total of five bikes with a Bosch SX motor, all of which employ the same frame but rely on different amounts of travel and a different wheel size configuration, thus covering a different range of applications. In M1’s portfolio, the five variants are called Allterrain, Trail, Allmountain, Enduro and WorldCup. The Allterrain model combines 160/150 mm of travel and comes with a 27,5″ wheel setup, a lighting system and a rear pannier rack. The M1 CC SX “Trail” model has 150 mm of travel front and rear and also rocks a 27,5″ wheel setup. The Allmountain rolls on mixed wheel sizes, generating 160 mm of travel front and rear. The only full-29er in the line-up is the WorldCup model, which at 170 mm front and rear, generates the most travel and comes equipped with some of the finest components available on the market.

We tested the Enduro version, which combines 170/160 mm of travel and rolls on mixed wheel sizes. Each of the five models is available in three versions: one with an SX drive, another one with a bigger motor and an S-pedelec variant. That said, the models with bigger motors look completely different from our SX test bike, which tips the scales at 21 kg in size L and can be purchased on M1’s website for € 9,900. If you visit their page, don’t expect to find too many details about the bikes, because the German manufacturer prefers to let the hard facts speak for themselves.

The new M1 Sporttechnik EN.400.SX 2024 in detail

The M1 Sporttechnik EN.400.SX relies on a modern yet discreet design language. For MY 2024, M1 have moved away from the distinctive curved lines they used for the older models. Instead, the EN.400.SX sports a clean frame silhouette with straight lines. The 55 Nm Bosch SX motor draws its power from a compact 400 Wh battery and is paired with a bar-mounted Purion 200 remote with a small screen, which provides all crucial riding data.

The Purion 200 remote is quite bulky but provides all crucial riding data at a glance.
The compact Bosch SX motor delivers 55 Nm of torque.

A TPU plate on the down tube protects the frame against stray rocks and nasty impacts. The battery cover is secured with a FIDLOCK magnetic closing system, which allows you to remove the cover quickly and easily without the need for tools. The closure system works reliably and stayed securely in place throughout this test – excellent! The battery can be charged both on and off the bike. For internal charging, you’ll have to use the charging port, which is safely tucked away in a recess on the seat tube. For external charging, on the other hand, you’ll have to unlock the battery with a key before you can remove it from the frame.

M1’s in-house mech hanger looks a bit bulky.
The charging port is safely tucked away inside a recess in the seat tube.

The EN.400.SX has two bottle cage mounts, one at the top and one at the bottom of the down tube. The chainstay protector is cleverly integrated into the frame line and effectively prevents chain slap despite its thin silhouette. The back of the seat tube is covered with a protective rubber coating. M1 Sporttechnik rely on their own mech hanger rather than SRAM’s universal derailleur hanger, but this is just a beefy, round piece of metal, which isn’t the best looking solution out there.

The spec of the new 2024 M1 Sporttechnik EN.400.SX

The M1 Sporttechnik EN.400.SX is only available in one spec variant, which looks pretty classy but also has a few flaws. For example, the FOX 38 Factory fork, comes with the inferior FIT4 damper, which might save a few grams but can’t keep up with the excellent performance of its top-tier GRIP2 counterpart. The rear suspension relies on a FOX FLOAT X Factory air shock with externally adjustable rebound and compression settings. FOX Transfer Factory dropper post has a fancy Kashima coating but only offers a meagre 150 mm of travel, which is clearly not enough for a potent enduro e-bike, restricting freedom of movement on the trail. In addition, M1 rely on the same dropper travel in all sizes, which makes no sense, since taller riders with longer legs always require a longer-travel dropper, and can take advantage of the increased insertion depth of a larger frame size.

Not a good fit: The FIT4 damper doesn’t deliver the best trail performance and has no place on an enduro e-bike.
With just 150 mm of travel, the FOX Transfer Dropper offers too little travel, especially considering that all frame sizes come with the same-length dropper.

MAGURA MT7 four-piston with a 220 mm rotor at the front and 200 mm disc at the rear provide powerful, reliable deceleration. However, the long two-finger levers aren’t a great match for a sporty e-enduro bike and offer poor ergonomics. Shifting is taken care of by a top-tier Shimano XTR drivetrain with a bling gold chain – too much for our taste!

With the 220 mm rotor at the front, you get powerful deceleration.
Die goldene Kette springt bei dem eher schlichten Bike sofort ins Auge. Ob positiv oder negativ, ist wohl Geschmackssache.
The golden chain immediately stands in stark contrast with the M1’s discreet look. It’s a matter of taste whether you like it or not.

German component brand Reverse supply the cockpit, consisting of a 35 mm stem and 800 mm alloy handlebars, while DT Swiss provide the H1900 alloy wheelset. However, this is one of DT’s more affordable models and doesn’t quite fit in with the rest of the M1’s high-end spec. Wheels are something you shouldn’t skimp on, as they have a big influence on the performance of a bike – and with enduro bikes, durability is a huge issue too! The rims are fitted with 2.6” Schwalbe Eddy Current tires, both in the harder Soft rubber compound, with Super Trail casing at the front and robust Super Gravity casing at the rear. We’re very fond of the robust rear tire, but would prefer to have the softer Ultra Soft rubber compound at the front for more traction.

DT-Swiss’ budget H1900 wheelset doesn’t quite match the otherwise high-end spec.
Schwalbe’s Eddy Current tires in the robust Super Gravity casing.

M1 Sporttechnik EN.400.SX

€ 9,900


Motor Bosch SX 55 Nm
Battery Bosch PowerTube 400 Wh
Display Bosch Purion 200
Fork FOX 38 Factory FIT4 170 mm
Rear Shock FOX Float X Factory 160 mm
Seatpost FOX Transfer Factory 150 mm
Brakes MAGURA MT7 220/200 mm
Drivetrain Shimano XTR 1x12
Stem Reverse 35 mm
Handlebar Reverse Alu 800 mm
Wheelset DT Swiss H1900 Alu 29"/27.5"
Tires Schwalbe Eddy Current, Super Trail, Soft/Schwalbe Eddy Current, Super Gravity, Soft 2.6"/2.6"

Technical Data

Size S M L XL
Weight 21 kg
Perm. total weight 130 kg
Max. payload (rider/equipment) 109 kg
Trailer approval Nein
Kickstand mount Ja

– Push the saddle all the way forward
– Tires with softer Ultra Soft rubber compound at the front

The geometry of the new 2024 M1 Sporttechnik EN.400.SX

The M1 Sporttechnik EN.400.SX is available in four sizes, S to XL, though M1 don’t recommend a frame size based on body size yet. Our test bike in size L combines 465 mm reach and a long 470 mm seat tube, which restricts freedom of movement together with the short-travel dropper post. Chainstay length is 445 mm across the board and doesn’t grow with the frame size.

Size S M L XL
Top tube 616 mm 620 mm 654 mm 687 mm
Seat tube 430 mm 430 mm 470 mm 510 mm
Head tube 120 mm 120 mm 130 mm 140 mm
Head angle 65.6° 64.4° 64.4° 64.4°
Seat angle 75.2° 74° 74° 74°
Chainstay 445 mm 445 mm 445 mm 445 mm
BB Drop 20 mm 10 mm 10 mm 10 mm
Wheelbase 1,223 mm 1,235 mm 1,268 mm 1,301 mm
Reach 448 mm 434 mm 465 mm 496 mm
Stack 639 mm 648 mm 658 mm 668 mm
Helmet Troy Lee Designs Flowline SE | Glasses Melon Optics Alleycat | Shirt Troy Lee Designs Ruckus 3/4 Jersey Camber | Pants Troy Lee Designs Ruckus Cargo Pants | Shoes Crankbrothers Mallet Lace | Gloves Troy Lee Designs Flowline

The new 2024 M1 Sporttechnik EN.400.SX on the trail

At first, the M1 Sporttechnik EN.400.SX feels relatively long, despite the moderate reach values. The pedalling position is fairly stretched and places you far back above the rear wheel. That said, the position is very comfortable and doesn’t put too much pressure on your hands, making the EN.400.SX a pretty good companion for touring. The Bosch SX motor packs a punch but also drains the small 400 Wh battery relatively quickly. While the powerful motor allows you to negotiate even steeper ramps, the rear-heavy pedalling position forces you to actively weight the front wheel to keep it tracking. We recommend pushing the saddle all the way forward to shift the centre of gravity away from the rear. The M1’s rear suspension only bobs marginally when pedalling, so reaching for the climb switch isn’t necessary on long climbs, especially considering that you’re climbing with assistance.

When you turn its nose into the valley, the EN.400.SX makes you feel comfortable from the get-go, integrating you nicely between its wheels, with the weight evenly distributed between the front and rear. When you hit the first corners, the M1 feels quite sluggish, requiring a fair amount of effort to negotiate bends. In slower trail sections, the bike’s a handful and rather difficult to swing around tight corners.

It’s on faster trails that the M1 really comes to life, slapping a massive grin on your face in fast rollers and berms! When riding at high speed, it’s reassuringly composed and comfortable. The rear suspension provides a decent amount of support and doesn’t sink into its travel on flowing trails, allowing you to generate lots of speed by pumping. At the same time, the EN.400.SX offers bags of pop, making it easy to take off into the air despite the generous amounts of travel – you’ll quickly forget that you’re riding a 20+ kg ebike! Unfortunately, the FIT4 fork struggles to keep up with the rear suspension, rushing through its travel with big compressions and pulling your weight over the front end – you really need strong shoulders to counteract this! However, you can also compensate for this by adding a few clicks of compression damping on the fork, although this will also affect the fork’s responsiveness.

Who should take a closer look at the 2024 M1 Sporttechnik EN.400.SX?

The M1 Sporttechnik EN.400.SX is a special bike that appeals to a special kind of rider. The German brand’s aficionados will definitely get their money’s worth, taking home an elegant bike with a modern motor. On the trail, the M1 EN.400.SX delivers a great performance but feels at home on fast, flowing trails, with the suspension throwing in the towel when the going gets rougher. Overall, it’s an interesting option for all those riders who want a rare bike from a brand with history.

Our conclusions about the 2024 M1 Sporttechnik EN.400.SX

With the EN.400.SX, M1 Sporttechnik rely on a daring new design language, which might be slightly more sober than their previous bikes, but still makes an impact. With the spec, M1 have splashed the cash on some bling components, but save money exactly where they shouldn’t: with the fork and wheels, for example. On fast flow trails, the firm suspension makes the EN.400.SX a speed-thirsty, two-wheeled rocket, but stiffens up excessively when the going gets rough, robbing you of confidence on more technical trails.


  • Suspension provides tons of pop and good support
  • Flowtrail rocket
  • Inspires huge amounts of confidence on steep trails


  • Handling is somewhat sluggish
  • Rear suspension stiffens up excessively with fast consecutive hit
  • Flaws in the spec

For more information, visit M1 Sporttechnik’s website.

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Words: Simon Kohler Photos: Simon Kohler, Jan Richter, Antonia Feder, Julian Schwede

About the author

Simon Kohler

​​Simon loves speed. He has many years of racing experience as a longboard downhill skater, blasting down alpine passes on his board. In the meantime, he’s swapped four wheels for two, charging down trails and bike park lines aboard his mountain bike instead. He’s savoured some of Europe’s finest trails on various road trips through the Alps. Having lived in Austria for some time, he knows the local Austrian bike parks like the back of his hand. He’s a tech nerd through and through, using the skills and know-how from his engineering degree and his attention to detail to put the latest bikes and components through their paces for our reviews. As an early riser and self-declared muesli connoisseur, he lives his life powered by oats and the strength of his legs.