M51 THUNDERLIPS | Finish GLOSS BLACK MACHINED | size desc 20X7 | lug count 4.0 | bolt pattern metric 4X137/4X156 | bolt pattern standard 4X137/156 | offset 0 | backspacing 4.0 | centerbore 110.1 | load rating metric 566.0 | load rating standard 1250.0 | division 20 | barrel config R | shipping weight 28.6 | box label desc G-BLK MCH | finish warranty nan | structural warranty nan | rivet part no NONE | lip depth 2.02 | construction type Cast Aluminum | bolt pattern mm12542 137