Royal Enfield Motor-Cycle Care and Service Manual / Book by W.C. Haycraft usedComrehensive Riding and Maintenance Instructions for Owners of 158-66 250cc, 1963-66 350cc "Crusader" Type Singles having unit construction of Engine and Gearbox120 Pagesin english language
Velocette Valve Spring this is used for Inlet & Exhaust
MSS Viper Venom Clubman 350cc (MKI and MKII) Scrambler 350cc Clubman 500cc (MKI and MKII) Scrambler 500cc Thruxton Endurance Made in England by Velocette Ltd.