Integy RC Model Hop-ups C25155 Speed Tune Spring Set 30mm Long for 1/10 Size Touring Car & Drift (14mm I.D.) 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