QUICK HITS
• 160mm Horst Link Suspension
• 29” Wheels
• SRAM Eagle Powertrain Drive Unit
• 90Nm, 680W Peak
• 630Wh Battery
WE DIG
WE DON’T
ABOUT THE GASGAS ECC 6
What is the GASGAS ECC 6 designed to be?
GASGAS designed the ECC to be their hard-hitting E-Enduro machine, working with the KISKA Design team to create their idea of the ultimate enduro-race-ready eMTB. Utilizing the SRAM Eagle Powertrain eBike ecosystem, GASGAS has made an aggressive and formidable speed machine. There’s no mistaking the moto heritage with the plastic protective frame shrouds.
What eBike Drive System Does The GASGAS ECC 6 Use?
The GASGAS was the only bike in our 2025 eMTB Shootout to use the SRAM Eagle Powertrain eBike drive system. The Brose-developed drive unit delivers 90Nm Torque and up to 680W Peak Power to the rear wheel for its 2.9kg (6.4lbs) weight.
GASGAS opted to only offer the smaller 630Wh integrated battery, which weighs 3.1kg (6.8lbs). A Range Extender with 250Wh capacity (1.5kg/3.3lbs) is offered to boost the range further for the biggest days in the saddle.
The Eagle Powertrain system features a display integrated into the top tube. On the left side of the bar is a SRAM AXS Pods, giving control of the power modes (Range or Rally) and offering operation of the Walk mode.
SRAM’s AXS App allows for customization of the Range and Rally power modes and adjustment of the setup of the AXS pods.
This drive unit works with the AXS T-Type drivetrain on the GASGAS to offer Auto Shift possibilities for a simpler ride and Coast Shift to let the rider shift anywhere on trail.
What are the details of the GASGAS ECC 6 frame?
GASGAS manufactures the ECC from Carbon Fiber, with a frame layout designed by the well regarded KISKA Design. Unique to the ECC are the plastic frame shrouds, designed to offer protection as well as some design flair that’s an obvious nod to GASGAS’s moto heritage. On the underside of the drive unit is a metal skid plate, offering protection against the hardest of hits.
The ECC is designed around 29” wheels only and features no geometry adjustments. The ECC frame has plentiful room inside the front triangle for a large water bottle or the SRAM Range Extender. The battery is fixed within the downtube and requires the drive unit to be removed to access it. Cable routing is internal with ports in the side of the head tube.
GASGAS offers a standard two-year warranty on the ECC.
How much suspension travel does the GASGAS ECC 6 have, and with what linkage?
The GASGAS ECC has 160mm of Horst Link rear suspension. The kinematics are not extreme, with a 20% progression, fairly high 115% anti squat, and roughly 48% Anti Rise. Up front, a 170mm travel fork is fitted which helps give the bike a balanced and very neutral feel compared to other eBikes.
Notable bits are the DVO suspension units fitted with WP Suspension dampers. These use a unique Cone Valve technology that’s carried over from WP’s moto background, and gives a unique ride feel with typically higher levels of compression damping until the blow-off point is reached.
What are the stand-out geometry figures on the GASGAS ECC 6?
The GASGAS ECC features some unique geometry in our 2025 eMTB Shootout, with stability and confidence evidently the priorities. There’s a size-specific chainstay, with our size Large sitting at a very long 465mm. The Stack Heights are tall across the range, too, with the Large sitting at 663mm. Even with a relatively conservative 475mm reach on the size large, the GASGAS has the longest overall wheelbase by far.
What GASGAS ECC 6 build specs are offered?
GASGAS sells their bikes through dealers, with availability at dealers on every continent.
GASGAS offers the ECC in a choice of three build specs from the $6,999 ECC 4 to the $10,999 ECC 6 tested however we’ve recently seen a lot of discounted prices on these bikes, making them a bit easier to recommend.
Our ECC 6 in size large weighed in at 54.5 lbs (24.7 kg), with the Schwalbe Magic Mary and Albert Radial Gravity control tires fitted. These tires were fitted to provide dependable and consistent performance across all of our test bikes and delivered excellently.
Hit the specs list at the bottom of the article to see all of the parts specified on our test rig.
THE DIRT
Setting Up The GasGas ECC 6 | The DVO x WP suspension found on the GasGas ECC 6 features some unique adjustability and damping philosophies. The OTT (Off The Top) air spring in the DVO Onyx D1CV OTT fork gives tuning potential to the air spring character, but requires setup with the fork fully aired down. The fork’s High Speed Compression and Rebound damping adjustments have a recommended setting for each rider weight, with a decreasingly firm HSC setting and increasingly slow Rebound setting as rider weight increases. The Low Speed Compression is recommended to begin with 8 clicks from closed, then to adjust to rider preference.
For the shock, DVO and WP’s recommendations are for riders of all weights to begin with the same HSC, LSC and Rebound settings as a baseline. The only thing that changes is the coil spring rate.
In practice, we struggled to find an absolute sweet-spot of handling characteristics from the front end, whereas the rear was seemingly less fussy. That said, the DVO X WP suspension performed adequately, and we’d expect that further tuning through repeated back-to-back runs over the long term could obtain further improvements for someone who owned the bike and really spent the time. For us, we felt like we finally got about 90% of the way there, but it took a good bit of time and experimenting.
How Did The SRAM Eagle Powertrain eBike System Perform?
As the only bike in this year’s eMTB Shootout to feature the SRAM Eagle Powertrain eBike system, it was interesting to put the GASGAS head-to-head with other bikes on the trail. The result was a system that felt a little outdated, compared to the new wave of drive units. That said, it offered sufficient power to get us up most climbs.
The areas where the SRAM system fell short of the likes of Bosch Gen 5 were in the noise it produced; control it offered, and its top-end power once the Bosch received its update. That’s not to say it’s a bad drive unit by any means, only that things have progressed rather quickly from the competition in the last couple of years.
We appreciated the neat integration of the ecosystem with SRAM’s AXS Pods doubling up as the dropper remote. Additionally, the Auto Shift and Coast Shift functionality that the system offered has real merits. That said, we preferred not to use the Auto Shift, but the Coast Shift offered gearbox-like functionality that came in handy in quick trail pitch transitions.
With the 630Wh battery fitted, range was adequate if not exceptional. We could see riders looking for all-day riding potential to feel the need to pick up a spare battery, and make use of the ability to swap batteries quickly at the trailside.
How Did The GasGas ECC 6 Climb?
The long rear end and moderate reach on the GasGas provided an effective machine to winch up steep climbs, even with the high stack height. The suspension offered good seated comfort, and the ground clearance was satisfactory to make pedaling through rock-littered climbs fairly pleasant.
The long wheelbase limited the drive unit clearance at times, calling the alloy bash guard into action numerous times. In these instances, it was great to see the enduro motocross-inspired, no-nonsense protection in place to keep the drive unit free from harm. Riders on board the GASGAS are likely to be inspired to go up some technical climbs at speed, so it makes sense to protect properly against the abuse. In fact, we’d love to see more manufacturers follow suit in offering proper durable motor protection.
It was the slower, tighter technical uphills where the drawbacks of the ECC’s long wheelbase were notable. The poor turning radius and higher weight both contributed to making for an unwieldy machine on the most extreme “Hard E-Enduro” climbs. However, for a typical singletrack or fire road climb, it’s unlikely to be too detrimental for most.
How Was The GasGas ECC 6 On The Descents?
The GasGas was a polarizing machine with real strengths and weaknesses depending on the trails being ridden. It would quickly flip from inspiring confidence in straighter and faster sections, to feeling like a handful and getting the rider into trouble when precision and agility was demanded.
When gravity was on the ECC’s side – preferably with a solidly steep gradient and wider changed in direction ahead – there was a lot of enjoyment to be had. The suspension offered plentiful sensitivity and sufficient support for the most part, which when combined with the stable geometry allowed the heels to be dipped and the trail to be attacked flat out. Our testers really loved the speed and high speed corners aboard this red hot beast.
It may not be a surprise that the combination of the the highest weight and longest wheelbase on test resulted in a bike that was also the least playful. The long rear end, high stack, sensitive suspension and high weight all combined to make manualing, popping and playing more difficult. A strong rider with solid technique can still play, but it’s not going to be the choice for those looking to apply a BMX-inspired style to the trails.
Finish And Value On The GasGas ECC 6
The general finish quality on the GasGas was reasonably high, though our crew was conflicted on the plastic frame guards. While they offer unique looks and protect the frame from some damage, they also produced some noise and vibration on the trails and guest tester Frenchie even managed to knock one off during a bit of an interesting maneuver on a technical climb. They are removable and the frame underneath looks fairly clean, so it’s an option for those who don’t value the “full moto” looks.
Value at MSRP is not on the GASGAS’s side on paper, especially considering the last-gen RockShox Reverb AXS dropper and SRAM Code brakes. We’d likely opt for the ECC 4 to save some serious cash whilst retaining the same frame and drive unit however, we’ve seen quite a few good sales, especially at moto dealerships. In fact, one of our good friends just found one of these bikes for nearly 50% off, so deals can be found!
The Wolf’s Last Word
Overall, the GASGAS ECC 6 had some serious strengths mixed in with some attributes that will certainly polarize certain types of riders. It is suited to a particular style of rider and terrain, but can also be a fine option for the general rider looking for a planted, comfortable and stable rig, as long as they don’t have a ton of tight trails. Ultimately, it’s a neatly put-together bike that is likely to please a particular group of riders.
Who Is The Ideal GasGas ECC 6 Rider?
If you favor high speed descents with a more race-oriented approach and want a comfortable machine for long climbs, the GASGAS ECC may be a perfect match. It’s likely to fit well if you appreciate the nod to GASGAS’s moto heritage and want to do your best supercross impression every time you hit the trails.
Price: $10,999 (ECC 6 – tested)
Website: Gasgas.com
About The Pack
During the production of our 2025 eMTB Shootout, we had the Ari Timp Peak 2.0 tested under 8 different riders and compared to the other 11 bikes. The Loam Wolf crew spans heights from 5’10” to 6’2” (177cm to 189cm), and weights from 160lbs to 220lbs. For this year’s test, we also included one of our supporting members, Leonard Johnston from Indiana. His “real world eMTBer” insight was invaluable to us as we evaluated the performance of each of these eBikes.
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