With the forged base-plate your trucks become more stable, lighter, and thinner. With a slightly bigger, thinner baseplate than the standard Indy's, the Forged Hollow trucks become a mid height truck. The total height for a standard height Indy is 53mm while the Forged Hollows are 51.5mm. You get hollow kingpins and hollow axles. Plus the original bushing design and shape. Indy logo at baseplate and hanger.

139 size to fit boards from 7.8" to 8.2" wide.

144 size to fit boards from 8.2" to 8.37" wide.

149 size to fit boards from 8.37" to 8.6" wide.

159 size to fit boards from 8.6" to 9" wide.

169 size to fit boards 9" +