Built to your measurements.
The Hiisi is a full-power e-MTB, quiet enough to hear your tyres. We machine and build every one to order in Jyväskylä, around your measurements.
One bike. Every category. Built around you.
There's no catalogue and no stock. You tell us how and where you ride, and we machine the frame to your size. It starts with a conversation. No payment to talk.

Climbs like a trail bike. Descends like a DH bike.
152 to 200 mm, from one frame.
Swap the shock, change the fork internals, move the geometry hardware, and the same frame goes from trail to downhill. When your riding changes, you change the setup. You keep the frame.

A motor that knows when to disappear.
The Maxon Air S adds to what you do. It feels closer to a long tailwind than a motor. Maxon has built precision drives since 1961, and their motors fly on every Mars rover. We picked them for a reason.

Machined to ±0.05 mm. No welds.
We machine every frame part from solid 7075 aluminium and bond them with our own method. No welds, so nothing warps. The kinematics you ride are the ones on my screen, to ±0.05 mm.

One engineer. No committee.
I built the first one because I couldn't buy it. I'm still building because the best frame is the one built for the person who rides it.
— Leo Kokkonen, Founder & lead engineer

Years ahead of the industry.

Tell us how you ride.
Tell us how you ride, and we'll take it from there. No obligation, and no payment to talk.
Start your build →