Integy RC Model Hop-ups T3148B Alloy Inner Diff Case(1) for 1/10 Revo, E-Revo, T-Maxx 4907, 4908 & Slayer(Both) Genuine Integy Parts Ship Fast Direct From Our US Warehouse Top-Quality Materials & Superb Craftsmanship Preferred by Knowledgable Model Hobbists & R/C Enthusiasts Most Orders Processed Same Day. Reliable & Fast Shipping With Tracking Number Check The Manufacturer's Support Website For Cross-Reference Part Search