This optional -4mm chassis for the R1B moves the rearward portion of the chassis and weight distribution forward by 4 mm, shortening the wheelbase and resulting in a more nimble, quicker-rotating handling feel.

Best suited for:

• Track conditions where quicker rotation and faster direction changes are needed
  
• Drivers looking for a more responsive and aggressive handling feel

Key Features and Specifications:

• R1 Wurks genuine option part
• High strength 7075 T6 aluminum construction 
• Durable black hard anodized coating 

Note:

When using the -4 mm chassis, some of the rearmost battery mounting options may no longer be available. Availability is also dependent on the electronics form factor being used.

Includes: 

• x1 R1B chassis, -4mm

Don't forget the battery foam: HERE