HPI Racing has expanded our Silicone Shock Oil choices with the addition of 15, 25, 35 and 45 weight... | HPI Racing has expanded our Silicone Shock Oil choices with the addition of 15, 25, 35 and 45 weight... | HPI Racing has expanded our Silicone Shock Oil choices with the addition of 15, 25, 35 and 45 weight... | New from HPI is the high torque SF-20 Servo. The SF-20 is a high performance upgrade to the SF-1 ser... | Owners of HPI SF-32TT servos can now replace worn or damaged servo cases with this factory replaceme... |