The tandem wheel conversion kits for the WR12, WR22, WR23, and WR33 Series Wheel Rakes improve the ride over rough fields and terrain.
The two-wheel add-on kit converts the WR1214 to a WR1216 to increase raking width.
The extra wheels conversion kits add fifth and sixth wheels to the WR2212 and WR2316. The extra wheels support the ends of each wing to reduce raking wheels from over-engaging the ground on rough or rolling terrain.