OMI Viperhead - OS.91SX/SZ This head has been designed to help you obtain maximum performance from your OS.91 Engine. The Viperhead dual glow plug version is a high compression head which accomplishes 6 things.1. Increases Power, 2. Better Cooling, 3.Improves Combustion, 4.Smaller Size for ease of installation, 5. Improves Sound, 6. Eliminates unwanted dead engine autos. Price: £76.59 £88.08 Including VAT at 15%
OUT OF STOCK
OMI Viperhead - YS.91ST This head has been designed to help you obtain maximum performance from your YS.91 Engine. The Viperhead dual glow plug version is a high compression head which accomplishes 6 things.1. Increases Power, 2. Better Cooling, 3.Improves Combustion, 4.Smaller Size for ease of installation, 5. Improves Sound, 6. Eliminates unwanted dead engine autos. Price: £76.59 £88.08 Including VAT at 15%
22681953 : Nipple No.1 Nipple No.1 Price: £1.30 £1.50 Including VAT at 15%
26731002 : Ball Race (F) - 40-61/70S/91S Ballrace Front for the OS.40-61/70S/91S Price: £8.69 £9.99 Including VAT at 15%
27006000 : Piston Pin 70SZ-H/91SX C Spec Piston Pin 70SZ-H/91SX C Spec Price: £3.91 £4.50 Including VAT at 15%
27708010 : Drive Washer 61SX/RX/SF/RF-H Drive Washer 61SX/RX/SF/RF-H Price: £8.69 £9.99 Including VAT at 15%
27708200 : Woodruff Key - 61SX/RX/SF/RF-H Woodruff Key - 61SX/RX/SF/RF-H Price: £2.60 £2.99 Including VAT at 15%
27917000 : Piston Pin Retainer - 61SX/RX/LX-H Piston Pin Retainer - 61SX/RX/LX-H Price: £2.17 £2.50 Including VAT at 15%
27930000 : Ball Bearing (R) - 61SX/RX/LX-H Ball Bearing Rear for the OS.61SX/RX/LX-H Price: £13.90 £15.99 Including VAT at 15%
29051000 : Crankcase 91SX Crankcase 91SX Price: £71.48 £82.20 Including VAT at 15%
29051010 : Crankcase 91SX-H C Spec Crankcase 91SX-H C Spec Price: £76.59 £88.08 Including VAT at 15%
29052000 : Crankshaft - 91SX-H Crankshaft - 91SX-H Price: £40.43 £46.49 Including VAT at 15%
29052100 : Crankshaft - 91SX-H C Spec Crankshaft - 91SX-H C Spec Price: £38.29 £44.03 Including VAT at 15%
29053100 : Cylinder Liner - 91SX-H Cylinder Liner for the OS.91SX-H Price: £53.19 £61.17 Including VAT at 15%
29053200 : Piston 91FX/SX-H Piston 91FX/SX-H Price: £27.66 £31.81 Including VAT at 15%
29053210 : Piston - 91SX-H C Spec Piston - 91SX-H C Spec Price: £22.97 £26.42 Including VAT at 15%
29054100 : Heatsink Head - 91SX-H Heatsink Head - 91SX-H Price: £34.03 £39.13 Including VAT at 15%
29054110 : Heatsink Head (Gold) - 91SX-H C Spec Heatsink Head (Gold) - 91SX-H C Spec Price: £78.25 £89.99 Including VAT at 15%
29057000 : Coverplate 91SX-H Coverplate 91SX-H Price: £6.80 £7.82 Including VAT at 15%
29057010 : Cover Plate - 91SX-H C Spec Cover Plate - 91SX-H C Spec Price: £8.30 £9.55 Including VAT at 15%
29057100 : Pump Holder 91SX-H C-SPEC PS Pump Holder 91SX-H C-SPEC PS Price: £23.40 £26.91 Including VAT at 15%
29063100 : Cylinder Liner - 91SZ-H Cylinder Liner 91SZ-H Price: £60.86 £69.99 Including VAT at 15%
29063200 : Piston - 91SZ-H Piston - 91SZ-H Price: £32.61 £37.50 Including VAT at 15% OUT OF STOCK
29081719 : Carburettor Retainer - 6H-7M Carburettor Retainer - 6H-7M Price: £3.83 £4.40 Including VAT at 15%
29081910 : Mid Range Needle Valve 91SX-H PS Mid Range Needle Valve 91SX-H PS Price: £16.51 £18.99 Including VAT at 15%
29084610 : Nipple T-Type 91SX-H C Spec Nipple T-Type 91SX-H C Spec Price: £3.62 £4.16 Including VAT at 15%
29503400 : Piston Ring - 91FX Piston Ring for the OS.91FX/SX Price: £13.90 £15.99 Including VAT at 15%
29505000 : Connecting Rod 91FX/91SX/60FP/65LA Connecting Rod 91FX/91SX/60FP/65LA Price: £13.90 £15.99 Including VAT at 15%
29505010 : Connecting Rod 91SX-H C Spec Connecting Rod 91SX-H C Spec Price: £12.76 £14.67 Including VAT at 15%
29513000 : Screw Set 91FX Screw Set 91FX Price: £6.95 £7.99 Including VAT at 15%
29514000 : Gasket Set 91FX Gasket Set 91FX Price: £2.83 £3.25 Including VAT at 15%
41621100 : Screw for Needle (60B) Screw for Needle (60B) Price: £2.77 £3.19 Including VAT at 15%
45010002 : Propellor Nut - 5/16 UNF Propellor Nut - 5/16 UNF Price: £1.30 £1.50 Including VAT at 15%
45406000 : Piston Pin FT-160/91FX Piston Pin FT-160/91FX Price: £3.40 £3.91 Including VAT at 15%
46120000 : Thrust Washer - FT120II/160/91FX Thrust Washer for the OS FT120II/160/91FX Price: £1.30 £1.50 Including VAT at 15%
72001010 : Viper Head 91SX-H Viper Head 91SX-H Price: £153.18 £176.16 Including VAT at 15%