REFLEX RACING - RX28 G2 A ARM SET (DARK GRAY - HARD) REFLEX RACING The Revisions include some ridges

The Revisions include some ridges above the front wheel well and a lower rear window and wing

Optional UARTLINK-II programming cable

What you've got works

REFLEX RACING - RX28 G2 A ARM SET (DARK GRAY - HARD) REFLEX RACING The Revisions include some ridgesRX28 046G2 Version 2 molded A Arms for your RX28. These are the hard arms. Hard arms are better for higher bite conditions as they provide sharper mid corner steering while reducing traction rolling. This listing includes the new Gen2 dedicated left and right arms. This set includes: 2 x Upper Arms (Gray Hard) 2 x Lower Arms (Gray Hard) 4 x 3. 55mm Aluminum Pivot Balls 2 x M2x6mm Screws 2 x M2x8mm Screws 2 x M1. 2x5mm self tapping screws 2 x M1. 2x4mm