Build your eMTB. From the people who built Europe's.

The Paratu CP is a carbon eMTB frame kit built around the Maxon Bikedrive AIR S — the same motor chosen by Thoemus, Spherik, Cduro, Pole, Instinctiv, Goobz, and Transalpes.

We've been building frames for our own brands Dirtlab, Fatlab, Roadlab and Sandman and other brands for 12 years. Now we build directly for you.

Key specs:

  • Motor: Maxon Bikedrive AIR S (integrated, not a bolt-on)
  • Battery: 400Wh in-tube + optional 250Wh range extender
  • Frame: Full carbon monocoque
  • Warranty: 10 years frame / 2 years motor / Crash replacement available
  • Weight: Under 19kg complete full Enduro build, Trail builds from 17.5KG
  • Ships from: Taichung, Taiwan

CUSTOM COLORS: Orders are best sent to our email: sales@bikelab-inc.com and handled directly due to longer leadtimes. We can schedule a personal call or video meeting to show you the possibilities to build your dreambike.

The Dirtlab Paratu CP Frame

A revolutionary e-bike frame kit with our latest G-Volve geometry and K-Volve kinematics, S-Volve sizing & fitted with the new Maxon Bikedrive Air S engine system for more power and range.

"Paratu" is the Bunun language term used to describe "Lightning" and is spoken as "Paratun." This bike is as fast as lightning, and Lightning stands for electricity as well.

  • G-Volve geometry is long, not too low, and slack. A 63.5-degree Head angle paired with a 77.8 seat tube angle.
  • K-Volve kinematics: We switched from traditional Horst link to a concentric pivot, ruling out brake chatter disturbances to optimize the bottomless feel we are known for. Low position when you use 29" F&R, High when you want a mullet setup 29F 27.5R.
  • S-Volve sizing has become even better, as each frame now offers sizes within its range. We utilize a RA (Reach Adjust) headset system, allowing you to start in the 0 position, travel down your fork 10mm and use the shorter -5 position, or fork up 10mm and use the longer +5 position. The same thing works for people who are between our sizes; they can use the longer frame and start short or the smaller frame and start long.
  • Driven by the new Maxon Bikedrive AIR S drive system: 88Nm, 650W, 400Wh internal battery, and an optional 250Wh range extender.

Collaboration with Maxon

From 2020 to 2022, we worked closely with Maxon to integrate and refine the frame and engine system, ensuring a top-notch e-bike that rides like a dream. This resulted in the Maxon Bikedrive Air systems a 2x you system. Since then, the market has evolved, and more power was needed, so we embarked on the second phase of the Air S system, which resulted in increased power and range. We maintained the original smoothness and almost zero drag feeling in the engine, meaning that you can ride it analog if you switch off the modes, so the gears retract from the driveshaft.

Engine Excellence

  • Inspired by NASA's Mars rover and copter engines
  • Compact and robust with a maximum power output of 88Nm
  • Three customizable ride modes are available via a Bluetooth app
  • Combine your data acquisition with many GPS watches or bike computers

Lightweight Design

  • Engine system: Only 3.7 kg
  • Frame: Approximately 2490grs, color/size-dependent
  • Complete bike weights: Between 16.9 Kg (SL TRAIL build spec) - 19.5 Kg (full enduro coil spec)

Maxon Components

Maxon Modeshifter by Zirbel

Maxon HMI display w. integrated processor

Maxon Bikedrive Air S engine: 1.95KG, 88NM, 666W

Maxon 400Wh intube Battery 1.8kg

Customization Options

  • Four rear suspension travel options: 145, 150, 160mm, or 165mm (230 eye to eye length shock, using 57.5/60/62.5/65 stroke lengths)
  • Compatible with 150-180mm front forks
  • 29F&R or 29F 27.5R flip chip for unchanged geometry when switching rear wheels
  • Reach adjust headset to make sure with each travel option, you can ride in the sweet spot of sizing by adjusting the reach from 0 to -5 and +5mm
  • Framekit includes: Frame, Reach Adjust Headset, Engine system, E13 core Crankset and DM 32/34T Chainring

Powerful Battery System

  • Maximum engine output: 88Nm and 650W power
  • In-tube battery: 1.8Kg, 400Wh, rechargeable in 3 hours
  • Optional 250Wh range extender for longer adventures

Ride Dynamics

  • Engine tuned for MTB-specific cadence at an average of 65RPM
  • Battery efficiency allows for 2-5 hour rides
  • Eco-Trail and Boost modes with a magnetic shifter for easy control
  • The closest you can get to real biking with 3x your strength available

Pre-Order Process

We operate on a pre-order basis to ensure quality and value, with a 3-week lead time for painting and assembly. Engine deliveries start from January 2025. Pre-orders can be taken from now on here or via email. RESERVE YOURS HERE NOW FOR MARCH 2026 delivery

Color Customization

Choose any Pantone color for a fully personalized bike, with a maximum lead time of 5 weeks for stocked frames. The custom paint cost is an upcharge.

Need More Info?

If you have questions or want to chat, drop us an email at sales@bikelab-inc.com

We hope this breakdown makes everything about the Dirtlab Paratu CP frame clearer and that it has sparked you to get one. If you have any more questions or need further assistance, feel free to ask, we do one-to-one video meetings as an extra service free of charge, and can assist you in buying the right E-bike. 😊

K-Volve Kinematics & G-Volve Geometry

Complete Build Examples

Contact us for complete builds via sales@bikelab-inc.com, please, then we can guide you through the offerings we have and build your dreambike:

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