Lighten up your SCT410 and EB48 with the all-new Tekno 7075 aluminum drive shafts. These drive shafts have 10 grams less rotating mass than the standard drive shafts for the SCT410 and EB48. They are tapered for strength and uniformity, and laser etched with the Tekno RC logo. The newly designed part is said to also spin truer than the previous drive shafts. These are direct replacement parts, and available now!
Source: Tekno RC