Larte's kits are made out of basalt fiber, which is made from lava rock and is both super light and very strong (the stuff's apparently used in bulletproof vests). In fact, Larte's bumper for the Model S weighs less than 30 pounds, while the company touts "lightning-like clear lines of the Tesla S Larte design" (inventor Nikola Tesla's most known discoveries involved electricity, get it?).
Last month, Hong Kong-based Revozport put out its most recent aftermarket kits for the Model S, which included an option that adds wider tires while featuring carbon composite front splitters, side skirts, fender flares and trunk spoilers. In the meantime, check out Larte's Tesla kit page here.