Original Grok Harmonizer Multi-Tool – Excellent Condition (used four times on my Hexhead)
Up for sale is a rare, original Grok Harmonizer digital vacuum and carburetor balancer in immaculate condition. This legendary tool is considered the absolute "gold dust" standard for syncing BMW boxer engines, Airheads, Oilheads, and multi-carburetor setups.
Up for sale is a rare, original Grok Harmonizer digital vacuum and carburetor balancer in immaculate condition. This legendary tool is considered the absolute "gold dust" standard for syncing BMW boxer engines, Airheads, Oilheads, and multi-carburetor setups.
- Authentic original unit built by Grok (Mark Von Striver).
- Pristine, excellent condition—used only 4 times since new.
- Includes the original vacuum hoses.
- Crystal-clear digital display with zero needle bounce or messy mercury.
- Features both dual-port differential balancing mode and a single-port tachometer mode.
- Housing, buttons, and display are fully functional with a clean battery compartment.
