
K-volve HL
HL Kinematic architecture
Horst Link rear suspension with a 205 mm trunnion-mount shock, built around the Maxon BikeDrive AIR drive unit (40 Nm, 250 W). Rear travel is set by the shock stroke; fork 140–170 mm.
Our standard colours are included in the price.
Custom paint (your Pantone colour, metallic or two-tone) is not sold through the cart. Send this build to Marvin: he confirms paint, price and delivery time by email.
Thank you — your configuration is with Marvin. He will email you to set up the video call.
Paratu HL — the Dirtlab carbon Horst Link eMTB frame kit (the E-Menace platform) with the light Maxon BikeDrive AIR system. Developed together with Maxon from 2020 to 2022.
USD 4,990 frame kit · limited run: 2 frames, more on request · free worldwide shipping for end consumers.
The frame kit includes: full carbon HL frame, headset, Maxon BikeDrive AIR drive unit, 250 Wh in-tube battery, HMI display, mode shifter, E13 crankset with 32T chainring (104 BCD 4-arm spider), UDH hanger and internal cable routing kit. Add suspension, wheels, drivetrain and cockpit to complete the build.
The AIR keeps the ride close to a pedal bike: an MTB-tuned assist at around 65 rpm cadence, near-zero drag when off, three ride modes, switched with a magnetic mode shifter and tuned in the Bluetooth app.
More about the frame: Paratu HL page. Questions or a video call? Mail sales@bikelab-inc.com.

K-volve HL
Horst Link rear suspension with a 205 mm trunnion-mount shock, built around the Maxon BikeDrive AIR drive unit (40 Nm, 250 W). Rear travel is set by the shock stroke; fork 140–170 mm.