Raybestos Powertrain Allison LT1000, LT2000 C1 TorqKit Drop-In Module #RTK-1001 features 1 C1 Apply Plate Steel, 1 C1 Apply Plate, 8 C1 Single Sided ID Spline GPZ (Requires Apply Plate), 8 C1 Single Sided, OD Spline GPZ (Requires Apply Plate) Frictions and Steels. 

Raybestos Powertrain GPZ friction plates greatly increase transmission performance and durability. This state-of-the-art friction material far exceeds OE material to withstand high stress, high temperatures and repeated cycling. GPZ's outstanding performance benefits are perfect for heavy-duty vehicles and high-stress driving. Testing of GPZ revolutionary friction material shows that it outperforms OE materials by as much as 20%. Plus, its performance improves as the power increases.