BLACK Carve 3 PRO Belt Drive Drivetrain – Plug & Play Upgrade Kit

Transform your BLACK Carve 3 PRO or BC3 Direct Drive into a torque monster.
This is the complete ONSRA Belt Drive Drivetrain — the exact setup used on the BLACK Carve 3 PRO (Belt Drive). Built for riders who want more acceleration, stronger hill performance, and the bulletproof reliability of ONSRA’s CNC precision parts.

The drivetrain comes fully assembled and ready to install. Simply replace your direct drive system — no custom work needed. Connect the motor cables to your ESC, calibrate the motors, and you’re ready to ride.

Key Features

• Plug & Play: Compatible with BLACK Carve 3 and BC3 PRO Direct Drive

• Motors: Dual 6374 – 150 Kv | 3500 W each

• CNC Truck: Precision-milled ONSRA truck with integrated motor mounts

• Belts: Dual HTD 5M 355 belts – smooth, quiet, and durable

• Bash Guard Mounts: Integrated CNC mounts ready for bash guards

• Pulley Options: Compatible with 55T / 60T rear pulleys

• Wheels: Works with 100 mm TARMAX, 150 mm, and 200 mm ONSRA AT wheels

• Motor Connectors: Pre-soldered for ONSRA ESCs

• Installation: Simple swap — just calibrate the motors in the remote/controller

Why Upgrade

• Massive torque increase over Direct Drive

• Race-tested on the ONSRA BLACK Carve 3 PRO

• CNC alignment = zero belt slip, zero flex

• Built for riders who want to climb mountains, not just roads