RC Hop Ups 1.9″ Rock Crawling Soft Anti-Foam Inserts (2) (115-120mm), waterproof pink or red rubber inner ring, with a soft open cell outer ring, and are perfectly sized for ALL 1.9” standard sized crawler tires. The inner insert is contoured to match the shape of the tires, while the soft outer foam provides maximum grip and maintains a fully supported sidewall to give them the correct shape, improved performance and maximum side-hilling performance. These inserts are extremely durable and will go the distance no matter where your adventure takes you.
 
Features:
Compatibility is stronger, (we made the size thicker, players can also DIY cut and thin to compatible with narrower tire skin).  More superb sidewall support than regular foam to keep the shape of tires.  Single weight is over 70g and 75g, increase the weight of the tire.  One size, two colors.
 
Specifications:
Material: Silicone Rubber
Size: 108*42mm (4.25*1.65in)
Weight: 75g/pcs (2.65oz)
Quantity: 2pcs
Type: Pink or Red
 
Includes:
1 x RC Hop Ups 1.9″ Rock Crawling Soft Anti-Foam Inserts (2) (115-120mm)