ENGINE - Automatic Distributors

helmets &
accessories
ENGINE
dirt bike Piston and Gasket Sets
apparel
accessories
carriers
& racks
bumpers
& winches
• All Namura Pistons have Molybdenium/Teflon skirt coatings that minimize resistance and
wear to provide extended life
• All Namura Pistons have anodized domes that provide superior heat resistance and
extended life span
• All Namura Pistons have super-high silicone content for additional strength
• All Namura Pistons have premium world class rings produced by the largest Japanese
OEM supplier in the world
• Rings will fit OEM pistons
• Namura Top End Repair Kits include pistons, rings and top end gasket sets
• Namura Top End Gasket Sets are precision cut Klingersil coated steel head gaskets for
better sealing and high-temperature resistance
plows &
implements
frame &
chassis
Top End Repair Kits Include Pistons, Rings and Top End Gasket Sets
utv
accessories
body
handlebar
cables &
levers
engine
fuel &
intake
electrical
& ignition
clutch
drive
bearings
brakes
suspension
& steering
tires &
wheels
chemicals
tools
go cart
trailer
accessories
BORE TOP END PISTON RING TOP END FULL SET
MODEL YEAR SIZE REPAIR KIT KIT KIT GASKET KIT GASKET KIT
HONDA
XR 50R 2000-2003 ----- ----- ----- ----- 180020 24.75
CR80 1986-1991 46.94 MM 180KS 81.00 180PS 66.10 180RS 6.55 180TS 11.00 180F 26.80
(NIKASIL CYL) 46.95 MM 180238 81.00 180237 66.10 180RS 6.55 ----- -----
46.96 MM 180240 81.00 180239 66.10 180RS 6.55 ----- -----
47.44 MM 180K2 81.00 180P2 66.10 180R2 6.55 ----- -----
47.94 MM 180K4 81.00 180P4 66.10 180R4 6.55 ----- -----
48.44 MM 180235 81.00 180234 66.10 180236 6.55 ----- -----
THESE PISTONS CANNOT USE OEM RINGS AND THESE RINGS WILL NOT FIT OEM PISTONS
CR80 1992-2002 46.94 MM ----- 180PS 66.10 180RS 6.55 181TS 16.85 181F 31.15
(NIKASIL CYL) 46.95 MM ----- 180237 66.10 180RS 6.55 ----- -----
46.96 MM ----- 180239 66.10 180RS 6.55 ----- -----
47.44 MM ----- 180P2 66.10 180R2 6.55 ----- -----
47.94 MM ----- 180P4 66.10 180R4 6.55 ----- -----
48.44 MM ----- 180234 66.10 180236 6.55 ----- -----
THESE PISTONS CANNOT USE OEM RINGS AND THESE RINGS WILL NOT FIT OEM PISTONS
CR85 2003-2007 47.44 MM 180245 86.85 180P2 66.10 180R2 6.55 181TS 16.85 181F 31.15
COMPRESSION 8.4:1 47.45 MM 180243 86.85 180232 66.10 180R2 6.55 ----- -----
(NIKASIL CYL) 47.46 MM 180244 86.85 180233 66.10 180R2 6.55 ----- -----
47.94 MM 180241 86.85 180P4 66.10 180R4 6.55 ----- -----
48.44 MM 180242 86.85 180234 66.10 180236 6.55 ----- -----
CR125 1992-2003 53.94 MM ----- 100PS 68.30 100RS 9.85 100TS 16.40 100F 39.80
COMPRESSION 8.8:1 53.95 MM ----- 180200 68.30 100RS 9.85 (1990-1999) (1990-1999)
(NIKASIL CYL) 53.96 MM ----- 180201 68.30 100RS 9.85 101TS 17.50 101F 38.75
54.44 MM ----- 100P2 68.30 100R2 9.85 (2000-2002) (2000-2002)
54.94 MM ----- 100P4 68.30 100R4 9.85 180202 21.85 102F 50.65
55.44 MM ----- 180198 68.30 180199 9.85 2003 2003
CR125 2004-2007 53.94 MM ----- 103PS 60.95 200RS 8.50 103TS 31.60 103F 49.60
COMPRESSION 8.6:1 53.95 MM ----- 180203 60.95 200RS 8.50 2004 2004
(NIKASIL CYL) 53.96 MM ----- 180204 60.95 200RS 8.50 104TS 31.25 104F 52.85
(2005-2007) (2005-2007)
CRF 150F 2006-2009 ----- ----- ----- ----- 180021 42.10
CRF 150R 2007-2009 ----- ----- ----- ----- 180022 82.25
CR250 1986-1996 66.34 MM ----- 126PS 80.65 126RS 13.90 126TS 13.60 126F 38.75
(NIKASIL CYL) 66.35 MM ----- 180214 80.65 126RS 13.90 (1986-1991) (1989-1991)
66.36 MM ----- 180215 80.65 126RS 13.90 125TS 18.60 125F 43.10
66.84 MM ----- 126P2 80.65 126R2 13.90 (1992-2001) (1992-2001)
67.34 MM ----- 126P4 80.65 126R4 13.90 ----- -----
67.84 MM ----- 180212 80.65 180213 13.90 ----- -----
CR250 1997-2001 66.34 MM 125KS 105.95 125PS 81.75 125RS 13.05 125TS 18.60 125F 43.10
(NIKASIL CYL) 66.35 MM 180209 105.95 180208 81.75 125RS 13.05 (1992-2001) (1992-2001)
66.36 MM 180211 105.95 180210 81.75 125RS 13.05 ----- -----
66.84 MM ----- 125P2 81.75 125R2 13.05 ----- -----
67.34 MM 125K4 105.95 125P4 81.75 125R4 13.05 ----- -----
67.84 MM 180206 105.95 180205 81.75 180207 13.05 ----- -----
CR250 2002-2004 66.34 MM 127KS 115.50 127PS 81.55 125RS 13.05 127TS 28.35 127F 47.40
COMPRESSION 8.5:1 66.35 MM 180217 115.50 180216 81.55 125RS 13.05 ----- -----
(NIKASIL CYL) 66.36 MM 180219 115.50 180218 81.55 125RS 13.05 ----- -----
USES 10025 RING SERIES