CATALOGO VERTEX 2020

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 97,31 KX125 1988-93 8220018-8 Friction 8 55,39 KX125 1989 8222003-6 Aluminum 6 64,63 KX125 8222003-7 Aluminum 7 11,73 KX125 1990-91 8220019-1 Aluminum 1 105,67 KX125 1992 8220020-7 Friction 7 41,32 8221008-6 6 75,48 KX125 1994-96 8220020-5 Steel 5 19,04 8220021-2 Friction 2 41,32 KDX200 1997-08 8221008-6 Friction 6 73,88 8220017-7 Steel 7 41,32 KDX200 1986-88 8221009-6 Friction 6 85,15 1986-87 8220018-7 Steel 7 10,56 KDX200 8220017-1 Friction 1 93,81 1989-94 8220019-8 Friction 8 58,43 KDX220R 8221010-7 Friction 7 93,81 KX250 1995-06 8220019-8 Steel 8 58,43 KX250 8221010-7 Friction 7 85,15 KX250 1997-05 8220018-7 Steel 7 73,88 KX250 8220022-7 Friction 7 49,25 KX250 1978-81 8221012-6 Friction 6 57,46 KX250 1982-83 8221012-7 Steel 7 128,96 KX250 1982-84 8220023-8 Steel 8 61,57 KX250 1985-86 8222004-7 Friction 7 57,46 1987-91 8221012-7 Aluminum 7 125,45 KX250 8220024-8 Steel 8 41,05 KDX400 1987 8221016-7 Friction 7 125,45 KDX420 1991 8220024-8 Steel 8 41,05 KX500 8221016-7 Friction 7 63,32 KX500 1992-02 8220022-6 Steel 6 63,32 8220022-6 Friction 6 128,96 2003-08 8220023-8 Friction 8 61,57 8222004-7 Friction 7 1979-80 Aluminum 76,51 1981 6 26,38 Friction 2 48,21 1987-04 Friction 7 105,50 1987 Steel 8 48,21 Friction 7 87,17 KAWASAKI Motorcycles 4 Stroke - Moto 4 tempi Steel 7 12,45 Friction 1 37,91 KXF250 2004-05 8220025-6 Friction 7 87,17 8220028-2 Steel 7 12,45 Friction 1 43,33 8221008-7 Friction 8 74,72 Steel 6 21,97 KXF250 2006-20 8220028-8 Friction 2 37,91 8221008-7 Friction 7 TBD Steel 6 TBD 8220040-7 Friction 2 37,91 Friction 7 74,72 KLX400R 2003 8220041-1 Steel 6 10,99 8221014-7 Friction 1 TBD Friction 1 37,91 8220040-7 Friction 7 Steel KFX400 2005-06 8220041-1 8221017-8 8220040-6 KXF450 2006-16 8220009-2 8221017-7 TBD NEW KXF450 2017-18 TBD 8221017-7 8220040-6 NEW KXF450 2019-20 8220009-2 TBD 8221017-7 70

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 39,60 KTM Motorcycles 2 Stroke - Moto 2 tempi 8220072-6 Friction 6 39,60 8220072-6 Friction 6 55,50 SX60 1997-07 8220073-7 Friction 7 TBD SX65 2000-20 Friction TBD SX85 2013-17 TBD Steel 7 55,50 TBD Friction 7 73,88 NEW SX85 2018-20 8220073-7 Friction 2 15,52 2004-11 8220005-7 Steel 4 30,50 SX105 8221002-2 Aluminum TBD 8222001-4 Friction 7 TBD 125 SX 1998-18 TBD Steel 2 73,88 TBD Friction 4 15,52 NEW 125 SX 2019-20 8220005-7 Steel 7 30,50 1998-18 8221002-2 Aluminum 2 73,88 150 SX 8222001-4 Friction 4 15,52 8220005-7 Steel 7 30,50 125 EXC 1998-16 8221002-2 Aluminum 2 73,88 8222001-4 Friction 4 15,52 XC-W125 2017-18 8220005-7 Steel 7 30,50 8221002-2 Aluminum 2 73,88 200SX-EXC 1998-16 8222001-4 Friction 4 15,52 250SX-EXC 1991-12 8220005-7 Steel 9 30,50 2013-20 8221002-2 Aluminum 8 123,96 NEW 250SX-EXC 1991-12 8222001-4 Friction 7 TBD 2013-20 8220031-9 Friction 2 41,09 300EXC-MXC TBD Steel 9 11,74 300EXC (tpi 2018-20) 8221029-7 Steel 8 123,96 8221028-2 Friction 7 TBD KTM Motorcycles 4 Stroke - Moto 4 tempi 8220031-9 Friction 2 41,09 TBD Steel 11,74 250EXC-F 2007-13 8221029-7 Steel 8 8221028-2 7 84,44 250EXC-F 2014-19 Friction 8 58,51 8220008-8 Steel 7 75,05 NEW 250EXC-F 2020 8221004-7 Friction 2 41,10 2006-12 8220064-8 Steel 8 11,74 250SX-F 2013-15 8221028-7 Steel 2 TBD 8221029-2 Friction 7 11,74 250SX-F Steel 8 41,09 TBD Steel 7 84,44 NEW 250SX-F 2016-17 8221028-2 Friction 8 58,51 NEW 250SX-F 2018-20 8221029-7 Steel 7 75,05 2018-19 8220008-8 Friction 2 41,10 250SX-F 8221004-7 Steel 7 11,74 8220064-8 Steel 6 65,66 8221028-7 Friction 2 35,22 8221029-2 Steel 7 11,74 8220064-7 Steel 1 TBD 8221029-6 Friction 6 41,10 8221028-2 Steel 35,22 Steel 7 TBD TBD TBD 2 41,10 8221028-1 Steel 11,74 8221029-6 Steel TBD 8221028-7 8221029-2 71

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 2012-17 75,05 350EXC-F 2018-20 8220064-8 Friction 8 41,10 2012-17 8221028-7 Steel 7 11,74 NEW 350EXC-F 2011-15 8221029-2 Steel 2 TBD 2016-17 Friction 8 41,09 350 FREERIDE 2018-20 TBD Steel 7 11,74 1998-01 8221029-7 Steel 2 75,05 350SX-F 2009 8221028-2 Friction 8 41,10 8220064-8 Steel 7 11,74 NEW 350SX-F 2010-11 8221028-7 Steel 2 75,05 NEW 350SX-F 8221029-2 Friction 8 41,10 2003 8220064-8 Steel 7 11,74 400 LC4 2004-05 8221028-7 Steel 2 65,66 400 EXC 2006-07 8221029-2 Friction 7 35,22 8220064-7 Steel 6 11,74 400 EXC 2008 8221029-6 Steel 2 TBD 2009 8221028-2 Friction 7 35,22 450 EXC-R Steel 6 11,74 450 EXC-R 450SX 2010-11 TBD Steel 2 93,80 450 EXC-R 8221029-6 Friction 7 13,40 450 EXC-R 2012-17 8221028-2 Friction 1 99,20 450 EXC-R 2018-20 8220070-7 Friction 8 13,40 8220071-1 Friction 1 36,80 450 EXC-R 2006 8220069-8 Steel 8 99,20 2007-11 8220077-1 Friction 8 13,40 NEW 450 EXC-F 2012-17 8221030-8 Friction 1 32,20 8220069-8 Steel 7 4,60 NEW 450 EXC-F 8220077-1 Steel 1 82,60 8221030-7 Friction 7 23,48 450SX 8221032-1 Steel 4 23,48 450 SX-F 8220067-7 Steel 4 65,66 8221029-4 Friction 7 46,96 450 SX-F 8221028-4 Steel 8 65,66 8220064-7 Friction 7 23,48 8221029-8 Steel 4 111,60 8220064-7 Friction 9 36,80 8221029-4 Steel 8 99,20 8220069-9 Friction 8 13,40 8221030-8 Friction 1 36,80 8220069-8 Steel 8 99,20 8220077-1 Friction 8 13,40 8221030-8 Friction 1 32,20 8220069-8 Steel 7 4,60 8220077-1 Steel 1 75,05 8221030-7 Friction 8 41,09 8221032-1 Steel 7 11,74 8220064-8 Steel 2 TBD 8221029-7 Friction 8 41,09 8221028-2 Steel 7 11,74 Steel 2 23,48 TBD Steel 4 103,50 8221029-7 Friction 9 40,80 8221028-2 Steel 8 75,05 8221028-4 Friction 8 41,10 8220068-9 Steel 7 11,74 8221031-8 Steel 2 8220064-8 8221028-7 8221029-2 72

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° TBD NEW 450 SX-F 2018-20 TBD Friction 8 41,09 2008 8221029-7 Steel 7 11,74 450 SMR 8221028-2 Steel 2 103,50 450 SMR 2013-14 8220068-9 Friction 9 40,80 500 EXC 2012-17 8221031-8 Steel 8 75,05 2018-20 8220064-8 Friction 8 41,10 NEW 500 EXC 2008-09 8221028-7 Steel 7 11,74 2000-02 8221029-2 Steel 2 75,05 505 SX-F - XCF 8220064-8 Friction 8 41,10 520SX-F/EXC 2003 8221028-7 Steel 7 11,74 525SX-F/EXC 2004-05 8221029-2 Steel 2 TBD 525SX-EXC SMR 2006-07 Friction 8 41,09 525SX-F/EXC TBD Steel 7 11,74 530EXC 2008 8221029-7 Steel 2 103,50 530EXC 2009 8221028-2 Friction 9 40,80 8220068-9 Steel 8 82,60 530EXC 2010-11 8221031-8 Friction 7 23,48 8220067-7 Steel 4 23,48 SMR 560 2006-07 8221029-4 Steel 4 82,60 XC450 - XC525 ATV 2008-09 8221028-4 Friction 7 23,48 SX450 SX505 ATV 2009-12 8220067-7 Steel 4 23,48 8221029-4 Steel 4 65,66 8221028-4 Friction 7 46,96 8220064-7 Steel 8 65,66 8221029-8 Friction 7 23,48 8220064-7 Steel 4 23,48 8221029-4 Steel 4 111,60 8221028-4 Friction 9 36,80 8220069-9 Steel 8 99,20 8221030-8 Friction 8 13,40 8220069-8 Friction 1 36,80 8220077-1 Steel 8 99,20 8221030-8 Friction 8 13,40 8220069-8 Friction 1 32,20 8220077-1 Steel 7 4,60 8221030-7 Steel 1 65,66 8221032-1 Friction 7 23,48 8220064-7 Steel 4 23,48 8221029-4 Steel 4 65,66 8221028-4 Friction 7 23,48 8220064-7 Steel 4 23,48 8221029-4 Steel 4 103,50 8221028-4 Friction 9 40,80 8220068-9 Steel 8 8221031-8 65,66 Friction 7 23,48 POLARIS Motorcycles 4 Stroke - Moto 4 tempi Steel 4 23,48 Steel 4 65,66 OUTLAW 450 MXR 2008-10 8220064-7 Friction 7 23,48 OUTLAW 525 2007-11 8221029-4 Steel 4 23,48 8221028-4 Steel 4 8220064-7 49,10 8221029-4 Friction 5 26,96 8221028-4 Steel 4 37,53 Friction 4 SUZUKI Motorcycles 2 Stroke - Moto 2 tempi RM65 2003-06 8220014-5 8221006-4 RM80 1977 8220032-4 73

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 46,91 RM80 1978-81 8220032-5 Friction 5 37,53 RM80 1982-83 8220032-4 Friction 4 46,91 RM80 1984-85 8220032-5 Friction 5 46,91 RM80 1989-01 8220032-5 Friction 5 46,91 RM85 2002-19 8220032-5 Friction 5 56,29 RM100 8220032-6 Friction 6 65,67 RM100 1976 8220032-7 Friction 7 56,29 RM100 1977-78 8220032-6 Friction 6 56,29 RM125 1979-81 8220032-6 Friction 6 65,67 RM125 8220032-7 Friction 7 56,29 RM125 1975 8220032-6 Friction 6 65,67 RM125 1976-78 8220032-7 Friction 7 56,29 RM125 1979-80 8220032-6 Friction 6 100,81 1981-83-85 8220033-8 Friction 8 48,21 RM125 1986-87 8221015-7 Steel 7 106,72 8220034-8 Friction 8 48,21 RM125 1992-01 8221015-7 Steel 7 70,36 8220036-5 Friction 5 53,57 RM250 2002-12 8220035-5 Friction 5 84,44 RM250 8220036-6 Friction 6 112,58 RM250 1976-78 8220036-8 Friction 8 58,51 1979-85 8221027-7 Steel 7 126,65 RM250 1986-87 8220036-9 Friction 9 66,87 8221027-8 Steel 8 112,58 RM250 1988-91 8220036-8 Friction 8 58,51 8221027-7 Steel 7 155,90 RM250 1992-93 8220037-8 Friction 8 41,05 8221016-7 Steel 7 95,38 RM250 1994-95 8222005-7 Aluminum 7 81,75 8220038-6 Friction 6 27,25 RM250 1996-02 8220039-2 Friction 2 41,05 8221016-7 Steel 7 95,38 RM250 2003-05 8222005-7 Aluminum 7 121,96 8220063-8 Friction 8 41,05 RMX250 2006-13 8221016-7 Steel 7 112,58 RMX250 8220036-8 Friction 8 126,65 RMX250 1989-91 8220036-9 Friction 9 112,58 DR250 1992-93 8220036-8 Friction 8 98,51 DR350 1994-98 8220036-7 Friction 7 98,51 RM370 1990-95 8220036-7 Friction 7 84,44 RM465 1990-99 8220036-6 Friction 6 85,72 RM500 1976-77 8220035-8 Friction 8 85,72 1981-82 8220035-8 Friction 8 1983-84 76,51 Friction 6 26,38 SUZUKI Motorcycles 4 Stroke - Moto 4 tempi Friction 2 48,21 Steel 7 105,50 8220025-6 Friction 8 48,21 Steel 7 87,17 RMZ250 2004-06 8220028-2 Friction 7 12,45 Friction 1 37,91 8221008-7 Steel 7 RMZ250 2007-18 8220028-8 8221008-7 8220040-7 DRZ400 2000-07 8220041-1 8221017-7 74

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 69,47 RMZ450 2005-07 8220042-6 Friction 6 27,25 2008-20 8220039-2 Friction 2 29,94 RMZ450 8221018-6 Steel 6 5,00 DR600 8221019-1 Steel 1 34,74 8220042-3 Friction 3 68,12 8220039-5 Friction 5 29,94 8221018-6 Steel 6 5,00 8221019-1 Steel 1 85,72 8220035-8 Friction 8 87,17 SUZUKI ATV 4 Stroke - ATV 4 tempi Friction 7 12,45 Friction 1 37,91 LTZ400 2003-04 8220040-7 Steel 7 112,05 8220041-1 Friction 9 43,33 LTZ400 2005 8221017-7 Steel 8 81,72 8220040-9 Friction 6 27,25 LTR450 2006-11 8221017-8 Friction 2 29,94 8220074-6 Steel 6 5,00 8220039-2 Steel 1 8221018-6 43,42 8221019-1 Friction 4 19,64 Friction 2 49,10 YAMAHA Motorcycles 2 Stroke - Moto 2 tempi Friction 5 65,12 Friction 6 54,27 NEW YZ65 2018-20 8220044-4 Friction 5 19,64 1983-92 Friction 2 54,27 YZ80 1993-94 8220043-2 Friction 5 19,64 YZ80 1995-01 Friction 2 91,47 8220043-5 Friction 6 106,72 YZ80 2002-20 8220044-6 Friction 7 76,23 1983-87 8220044-5 Friction 5 30,50 YZ85 8220043-2 Friction 2 114,93 1988 8220044-5 Friction 7 29,94 YZ125 1989-90 8220043-2 Steel 6 131,35 YZ125 8220045-6 Friction 8 34,93 1991-92 8220045-7 Steel 7 83,24 YZ125 8220045-5 Friction 8 34,93 1993-97 8220045-2 Steel 7 62,43 YZ125 8220046-7 Friction 6 32,84 1998-99 8221020-6 Friction 2 34,93 YZ125 8220046-8 Steel 7 131,35 2000-04 8221020-7 Friction 8 34,93 YZ125 8220047-8 Steel 7 131,35 2005-19 8221020-7 Friction 8 34,93 YZ125 8220047-6 Steel 7 104,47 2005-19 8220046-2 Friction 7 96,42 YZ125 1982-87 8221020-7 Friction 7 35,18 1988-90 8220046-8 Steel 6 114,93 NEW WR 125 1991-92 8221020-7 Friction 7 131,35 1993-19 Friction 8 41,05 YZ250 1994-19 8220046-8 Steel 7 75,97 1986-92 Friction 7 104,47 YZ250 1982-90 8221020-7 Friction 7 YZ250 8220049-7 YZ250 8220050-7 YZ250 8221021-6 RD350LC 8220051-7 YZ490 8220051-8 8221021-7 8220053-7 8220049-7 75

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 75,97 YAMAHA Motorcycles 4 Stroke - Moto 4 tempi Friction 7 96,42 Friction 7 114,93 TT 350 1985-95 8220053-7 Friction 7 131,35 Friction 8 72,84 WR250 1989-90 8220050-7 Friction 7 32,84 Friction 2 39,92 WR250 1991-93 8220051-7 Steel 8 104,21 Friction 9 39,92 WR250 1994-97 8220051-8 Steel 8 25,50 Friction 2 TBD 8220047-7 Friction 6 TBD Steel 7 72,84 WR250F 2001-14 8220046-2 Friction 7 32,84 Friction 2 39,92 8221023-8 Steel 8 104,21 Friction 9 39,92 WR250F 2015-19 8220060-9 Steel 8 102.00 8221023-8 Friction 9 48,21 Steel 8 63,32 8220025-2 Friction 6 73,88 Friction 7 78,96 NEW WR250F 2020 TBD Friction 7 11,29 TBD Friction 1 147,76 Friction 9 46,91 8220047-7 Steel 8 131,35 Friction 8 14,92 YZ250F 2001-07 8220046-2 Friction 1 46,91 Steel 8 87,85 8221023-8 Friction 8 14,92 Friction 1 98,83 YZ250F 2008-18 8220060-9 Friction 9 87,85 8221023-8 Friction 8 54,90 Friction 5 31,50 YZ250F 2019-20 8220025-8 Friction 3 41,05 8221008-7 Steel 7 21,96 Friction 2 63,00 XT250 1980-83 8220052-6 Friction 6 41,05 Steel 7 98,83 XT350 1985-98 8220052-7 Friction 9 46,91 YZ-WR400F 1998-99 8220054-7 Steel 8 87,85 8220055-1 Friction 8 41,05 Steel 7 54,90 YZ426F 2000 8220051-9 Friction 5 31,50 8221024-8 Friction 3 41,05 Steel 7 84,44 8220051-8 Friction 8 104,47 Friction 7 63,32 YZ-WR426F 2001-02 8220056-1 Friction 6 21,71 Friction 2 63,32 8221024-8 Friction 6 21,71 Friction 2 63,32 WR450F 2003 8220057-8 Friction 6 21,71 8220056-1 Friction 2 63,32 Friction 6 21,71 WR450F 2004 8220057-9 Friction 2 WR450F 2005-15 8220057-8 8220057-5 WR450F 2016-18 8220065-3 8221021-7 8220057-2 NEW WR450F 2019-20 8220065-6 8221021-7 YZ450F 2003-06 8220057-9 8221024-8 YZ450F 2007-13 8220057-8 8221021-7 8220057-5 YZ450F 2014-20 8220065-3 8221021-7 XT-TT500 1977-81 8220052-8 WR500 1991-95 8220049-7 XT550 1982-1983 8220052-6 8220053-2 TT600 1984-2004 8220052-6 8220053-2 XTZ600 1982-1983 8220052-6 8220053-2 XTZ660 1984-2004 8220052-6 8220053-2 76

CLUTCH PLATES DISCHI FRIZIONE Model Years Code Type Pieces # € Modello Anni Codice Tipo Pezzi n° 58,92 YAMAHA ATV 2 Stroke - ATV 2 tempi 8220043-6 Friction 6 9,83 8220048-1 Friction 1 29,94 BLASTER200 1988-06 8221025-6 Steel 6 75,97 8220053-7 Friction 7 35,18 BANSHEE350 1987-06 8221026-6 Steel 6 41,60 YAMAHA ATV 4 Stroke - ATV 4 tempi 8220047-4 Friction 4 32,84 8220046-2 Friction 2 24,95 YFM 250 R 2008-13 8221020-5 Steel 5 65,12 8220053-6 Friction 6 9,82 RAPTOR350 2005-13 8220062-1 Friction 1 65,12 WARRIOR350 1987-04 8220053-6 Friction 6 9,82 8220062-1 Friction 1 50,31 YFZ450F 2004-06 8220058-7 Friction 7 8,50 8220059-1 Friction 1 41,05 YFZ450F 2007-09 8221021-7 Steel 7 50,31 8220058-7 Friction 7 14,92 YFZ450R 2009-13 8220056-1 Friction 1 63,00 8220065-6 Friction 6 21,96 RAPTOR660 2001-05 8220057-2 Friction 2 41,05 8221021-7 Steel 7 63,32 YFM700 R 2006-14 8220052-6 Friction 6 21,71 8220053-2 Friction 2 63,00 RAPTOR700 2006-17 8220065-6 Friction 6 21,96 8220057-2 Friction 2 41,05 8221021-7 Steel 7 63,00 8220065-6 Friction 6 21,96 8220057-2 Friction 2 41,05 8221021-7 Steel 7 77

ASSEMBLY INSTRUCTIONS OFF ROAD PISTONS 2 Stroke After disassembling the cylinder head and the cylinder, it’s necessary to measure the actual cylinder diameter (1), using a dial bore gauge. When actual bore size is known then it is time to pick the right VERTEX piston to fit your bore size, respecting the clearance suggested with the cylinder (i.e. CR 125 clearance 0.05 mm). Open the piston box, take the ring and position it inside the cylinder bore. Measure the gap (2) between the two ring ends: it must be between a minimum of 0.25 and a maximum of 0.50 mm; if necessary adjust the ring end gap dimension using a file (3). Take special care when performing this step. We are now ready to assemble the ring into the piston groove: first of all pay attention to not crush or damage the ring during installation, every precaution should be taken not to compromise the ring integrity with the groove and to not reduce the rings retaining pressure. Attention must be paid to any markings (i.e. T) on the rings surface: always position the ring with the written part on the top side. Introduce before the ring from the side opposite to the locating pin and turning it as it was a spring taking care to not damage the groove during the operation. After verifying that the rings do not have strange creeping or binding, position the ring tips around the locating pin. We are now ready to assemble the piston and cylinder. A light coating of two stroke oil should be applied to the piston with the ring(s) assembled. Position the arrow printed on the piston dome toward the exhaust side, install one circlip on the opposite side you will slide the pin thru and pressing the ring (or the rings) into the groove one by one starting from the top slide the cylinder assembly over the rings. When this is complete carefully lower piston and cylinder onto the con- necting rod and slide piston pin thru piston and rod and install circlip. If you prefer you may install piston onto connecting rod first and then compress ring(s) and install cylinder (4). Assemble cylinder onto cases and install cylinder head and torque all fasteners to the recommended specs in your owner’s manual. (1) (2) (3) (4) 78

ASSEMBLY INSTRUCTIONS OFF ROAD PISTONS 4 Stroke After disassembling the cylinder head and the cylinder, it’s necessary to measure the actual cylinder diameter (1), using a dial bore gauge. When actual bore size is known then it is time to pick the right VERTEX piston to fit your bore size, respecting the clearance suggested with the cylinder (i.e. CRF450 clearance 0.05 mm). Attention must be paid to any markings (i.e. T) on the rings surface: always position the ring with the written part on the top side. To assemble the rings on the piston you must start from the oil ring and introducing as first the spring (2) paying attention to not place one on the top of the other the two extremities. After setting the two foils one up and the other down at direct contact with the groove, taking care that the open tips must be at 120° from the spring open tips. We are now ready to assemble the compression ring(s) into the piston groove(s): first of all pay attention to not crush or damage the ring during installation, every precaution should be taken not to compromise the ring integrity with the groove and to not reduce the rings retaining pressure. Introduce before the 2nd groove and after the 1st groove ring turning it as it was a spring (3) taking care to not damage the groove during the operation. After verifying that the rings do not have strange creeping or binding, position all the rings using the rule of the 120 deg. for each ring tip. We are now ready to assemble the piston and cylinder. A light coating of two stroke oil should be applied to the piston with the rings assembled. Position the arrow printed on the piston dome toward the exhaust side, install one circlip on the opposite side you will slide the pin thru and pressing the ring (or the rings) into the groove one by one starting from the top slide the cylinder assembly over the rings. When this is complete carefully lower piston and cylinder onto the con- necting rod and slide piston pin thru piston and rod and install circlip. If you prefer you may install piston onto connecting rod first and then compress rings and install cylinder (4). Assemble cylinder onto cases and install cylinder head and torque all fasteners to the recommended specs in your owner’s manual. (1) (2) (3) (4) 79