Sliding Block Kit (ATC400, ATC700, ITC DD295, DCD)

This kit is made of a specialized heat-resistant plastic designed to stabilize the movement of the internal drive chain. By keeping the chain properly aligned and reducing slack during operation, it prevents vibrations and internal housing wear.

This kit is highly versatile and compatible with BMW transfer cases (ATC400 and ATC700 models found in X3 and X5), Mercedes-Benz DCD Offroad units, and Land Rover ITC DD295 systems. It is a critical component for these specific drivetrain setups.

Yes, jerking or hesitation under load is often caused by chain instability or skipping within the transfer case. If your original sliding blocks are worn or melted, the chain loses its tensioning guide. Replacing them with this heat-resistant kit helps restore smooth power delivery.

The transfer case generates significant heat through friction and fluid movement. Standard plastics would degrade or deform, leading to chain failure. Our kit uses a special polymer that maintains its structural integrity even under extreme thermal stress.

Installation requires opening the transfer case assembly. While it is a straightforward replacement once the unit is open, we recommend professional installation or a high level of mechanical expertise to ensure the chain and gears are correctly timed and sealed.