BAC855 Upgraded Controller Kit - Handlworks

The BAC855 is a high-performance aftermarket motor controller developed by Handlworks to unlock smoother power delivery, improved throttle response, and advanced tuning capabilities on compatible electric bikes. Each version is model-specific, with dedicated firmware and a matched wiring harness pre-loaded for the intended platform. Functionality and compatibility depend entirely on selecting the correct version for your bike.

Have a question before or after your purchase? Our team is here to help with product guidance, compatibility questions, and order support.

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We ship nationwide within the United States. Shipping times and costs vary based on product type and destination.

• Small items typically ship within 1–3 business days
• Larger items and vehicles may require additional handling time
• Pre-orders ship once inventory arrives (estimated dates listed on product pages)

Tracking information is provided once your order ships.