- ECE approved lens

With a 16-gauge steel base plate

How low can you go

Note: A custom fabricated seat is required

With a polished end cover

PS, Model 412 shock set. 12.5". STD Duty. Black XL04-22 Touring - ECE approved lensDescription 412 series shocks: Best value Progressive Suspension shock, great as stock replacement. Nitrogen charged double steel wall body. Multi staged velocity sensitive valving. Five position cam style preload adjustment. Note: Black 412 shocks may be supplied without lower cover. What are Progressive Suspension's 'Heavy Duty' shocks? If you are a lightweight rider with a lightweight passenger, STD Duty is probably your best choice, heavy duty