Nova Engines .21 Engine Underhead Shim (4) (0.15mm)

The Nova Engines .21 Engine Underhead Shim provides a precise way to adjust compression in compatible .21 nitro engines. Adding or removing shims can help adapt the engine to temperature, humidity, track conditions, and different nitro percentages.

Features

• Designed for .21 nitro engines
• Enables precise compression tuning
• Adapts to weather and track conditions
• Optimizes performance for different nitro percentages
• Thin and lightweight design
• Ensures proper engine sealing

Includes

• (4) .21 Engine Underhead Shim (0.15mm)