Cotic Jeht 3: A Steel Mixed-Wheel Trail Bike with Enduro Ambitions
The Cotic Jeht 3 is a steel mixed wheel trail bike that deliberately blurs the line between trail and enduro. The third-generation Jeht now delivers 150mm of rear travel and replaces both the previous 140mm Jeht trail bike and the 160mm RocketMAX enduro platform. Earlier versions were 29ers that could be mulleted; this time Cotic has gone all‑in on a dedicated mixed‑wheel package, with a 29in front and 27.5in rear chosen after seeing many RocketMAX riders switch to this setup. The frame combines a Reynolds 853 and T45 steel front triangle with an aluminum swingarm, adding updated cable routing, a straight seat tube for deep dropper insertion, and UDH compatibility. Riders can choose a trail build with a 150mm fork or an enduro build with a 160mm fork and burlier wheels, underscoring how one frame is intended to cover a wide range of aggressive riding.
Modern MTB Geometry: Longer, Steeper, and Purpose-Built for Mixed Wheels
The Jeht 3 illustrates where modern MTB geometry is heading, especially for mixed‑wheel designs. Instead of flip‑chips or modular dropouts, Cotic committed to a 27.5in rear wheel and built the geometry around it from the ground up. Reach numbers are 12–13mm longer across all sizes compared with the previous mullet‑friendly 29er, and chainstays are size‑specific at 450mm and above, giving stability and better weight balance for taller riders. The seat tube angle is around two degrees steeper than before, pushing the rider more centrally between the wheels to aid climbing and cornering on steep terrain. Cotic even recommends a short 35mm stem to keep handling responsive on the long front center. With the option of a 160mm fork slightly slackening the head angle and reducing reach, the Jeht 3 shows how brands are fine‑tuning modern MTB geometry around mixed wheels rather than treating mullet setups as an afterthought.
Inside the Rocklink: Why Suspension Layouts Are Being Rewritten
Cotic’s new Rocklink suspension on the Jeht 3 is another sign that brands are revisiting linkage design to better match current trail bike trends. Based on the older droplink system but rearranged around a linkage‑driven single pivot, Rocklink moves the shock to free space in the front triangle—originally necessary for the Rocket e‑MTB battery and now handy for fitting one or even two bottle mounts on the non‑motorized Jeht. Beyond packaging, Cotic says the layout remains coil‑compatible and is tuned for the blend of traction and support that riders demand from modern trail bikes that see enduro duty. Updating kinematics in this way lets designers pursue more predictable leverage curves and improved mid‑stroke support without sacrificing small‑bump sensitivity. It also demonstrates a broader industry pattern: suspension layout decisions increasingly juggle performance, frame packaging, and everyday practicality such as bottle space and easier shock access.
Niner’s Six-Bar Comeback: A New Suspension Platform for Long-Travel e‑MTBs
Niner’s story shows another side of current trail bike evolution. After bankruptcy, acquisition, leadership changes, and a headquarters move under United Wheels, the brand was starting to fade from many riders’ radar. Its RIP 9 trail bike frame design has remained largely unchanged since 2019 aside from UDH updates. Now Niner is signaling a reboot with the unreleased RIP e9 RDO e‑bike, teased with 160mm of rear travel, a 170mm fork, and a Bosch Performance Line SX motor delivering 60Nm of torque from a 400Wh battery, plus range‑extender compatibility. The headline, though, is a licensed six‑bar suspension design from Level One Engineering. According to Level One, the six‑bar layout allows more independent control over pedaling behavior and shock rate than a typical four‑bar, enabling a carefully shaped axle path and a more linear, predictable shock feel—without dramatically increasing weight or complexity. It is Niner’s clearest statement yet that it intends to compete on suspension innovation again.
What Mixed Wheels and New Linkages Mean for Everyday Riders
Taken together, the Cotic Jeht 3 and Niner’s new six‑bar RIP e9 hint at clear trail bike trends. Mixed‑wheel trail bikes are shifting from optional mullet conversions to dedicated designs, with longer front centers, size‑specific chainstays, and steeper seat angles built around the smaller rear wheel’s agility and the larger front wheel’s rollover. At the same time, brands are investing in new suspension linkages—whether Rocklink or licensed six‑bar systems—to separate pedaling efficiency from bump absorption and deliver more confidence‑inspiring traction. Over the next one to two years, expect more mid‑price trail and e‑MTBs to echo these ideas, even if they use simpler hardware. Riders shopping in that window should look beyond wheel size labels and ask how the geometry was designed around those wheels, whether kinematics have been updated rather than recycled, and how things like bottle space, dropper insertion, and serviceability fit into the overall package.