FEULING PARTS VALV SPRINGS ECON05-17 TC 1121 yamaha-yzf-r7--rm01--750-1999-esi5903449 Minimalist construction for lower weight

Minimalist construction for lower weight and better mud clearance

and then there are Sidi Arx

Comfortable adjusting by central hand wheel

Electrosport Stators are designed to be direct replacements to original equipment manufactured to handle higher power loads developed in the USA of the best value for money oem_numbers: 21003-0010

FEULING PARTS VALV SPRINGS ECON05-17 TC 1121 yamaha-yzf-r7--rm01--750-1999-esi5903449 Minimalist construction for lower weightMade from Premium Stress Relieved Conical Ovate Wire, Features Extremely High Level of Fatigue Life, Uses A Much Smaller and Lighter Weight Retainer to Reduce Valve Weight and Create Quicker Rev and Smoother Motion, Designed to Handle The Demands of Performance CAMSHAFTS, KIT INCLUDES: ECONO Beehive Valve Springs, Lightweight 7 Steel Retainers, Machined Heat Treated Chromoly Spring Seats, Seat Shims, Valve Locks and a Set of Premium Viton Valve seals