Boom Racing #BR113007R Steel Rear Universal Swing Shaft - 1 Pair for HPI Sprint 2 Lightweight upgrade instantly enhances overall performance in handling and durability Description: Rear universal dogbone swing shafts from Boom Racing for the 1/10 HPI Sprint 2 to replace the rear driveshafts. Allows for more efficient power transfer to wheels for higher speed and smoother suspension. Machined from high strength steel for extra durability. Perfect for extreme driving conditions and competitive racing. Requires (BR113007F) to fully outfit the car. Replaces the following HPI Racing... more details below Color: Black Takes 7 to 15 business days by standard airmail shipping. 80% of packages arrive within 10 business days. Most packages ship within 12 hours. Please allow 1 extra day if order is placed during the weekend. Expediated shipping is shipped by DHL or Fedex. Arrives in about than 2-5 days. Major cities will receive orders earlier.