Arrma Metal Slipper and Metal Input Gears BOOST Box. Designed to give your Arrma vehicle an easy transmission upgrade this BOOST box is a bolt on upgrade for Arrma X2 BOOST, MEGA, or 3S vehicles. Using the same metal slipper clutch and metal diff input pinions as those used in 4S Arrma vehicles this kit prepares your 4X2 BOOST, MEGA, or 3S transmission with the strength to handle more powerful motors, allowing you keep growing as a driver while using the same ARRMA vehicle you already own.

Features:

• Stronger transmission gears for using more powerful motors
• Durability proven in 4S Arrma vehicles
• Easy to install video instructions available online
• Bonus Arrma BOOST decal set included in package

Includes:

• (1) Assembled Metal Slipper Clutch With 57T Mod 0.8 Sintered Spur Gear
• (1) 13T 4S Input Pinion Gear
• (1) All Necessary Hardware
• (1) Arrma BOOST Transmission Upgrade Product Manual
• (1) Arrma BOOST Decal Sheet