Hot Racing optional upgrade aluminum steering knuckle blocks (spindles) with carbon fiber steering arms for the Losi 1/5th Desert Buggy XL (DBXL), Desert Buggy XL-E (DBXL-E), and Monster Truck XL (MTXL)FEATURES: - CNC machined 6061-T6 aluminum construction- 6mm (two 3mm placed back-to-back) thick replaceable carbon fiber steering arms- Black anodizing for durability, corrosion resistance, and great looks- Replaces the factory plastic components- King pin bearings for super smooth steering action- Clearly marked "R" and "L" steering knuckle labels- High strength steel hardwareYOU WILL RECEIVE: - Left and right front steering knuckle blocks (spindles) with carbon fiber steering arms- Four (4) 7x11x3mm sealed ball bearings-Two shims with 6mm inner diameter and 7.9mm outer diameterCOMMENTS: - Recommended to use a removable-type locking adhesive on screws threading into metal- Upgrades the factory plastic Losi LOS254005 front spindles- Replaceable carbon fiber steering arms are Hot Racing RDBL21Gdescription revised by: SN April 30, 2018