1275cc 'a' Series Roller Tipped Rocker Set 1.5 Ratio, Bushed On Shaft. Includes Shaft And Steel Pillars. You Use The Springs And End Washers From A Stock Rocker Set to Build It Into A Complete Unit, Use With Arp Head Stud Kits, HSA9/HSA11
Since 1996 the APT website has been a popular destination for British sports car enthusiasts. British Leyland (BMC) 'A' & 'B' Series, all Triumph Engines "We wrote the book on Tuning the A-Series Engine" Authored by well known engine expert David Vizard and original partner in APT. APT specializes in engine and engine parts, and most importantly over 30 years of running them on the road, the track, the dyno and the flowbench.