—
Notes: Gap 0.025"
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Notes: 1997: Gap 0.024" Exc. MP · 1998: Gap 0.024" Exc. MP · 1999: Gap 0.024" · 2000: Gap 0.024" · 2001: Gap 0.024" · 2002: Gap 0.024" · 2006: Gap 0.024" · 2007: Gap 0.024" · 2008: Gap 0.024" · 2009: Gap 0.024"
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Notes: 1997: Gap 0.024" Exc. MP · 1998: Gap 0.024" Exc. MP · 1999: Gap 0.024" · 2000: Gap 0.024" · 2001: Gap 0.024" · 2002: Gap 0.024" · 2006: Gap 0.024" · 2007: Gap 0.024" · 2008: Gap 0.024" · 2009: Gap 0.024"
—
Notes: Gap 0.020"
—
Notes: Gap 0.024"
—
Notes: Gap 0.018"
—
Notes: Gap 0.028"
—
Notes: Gap 0.028"
—
Notes: Gap 0.025"
—
Notes: Gap 0.025"
—
Notes: Gap 0.025"
—
Notes: Gap 0.025"
—
Notes: Gap 0.016" Front Plug
—
Notes: Gap 0.020" Front Plug
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024" Exc. Race Kart
—
Notes: Gap 0.024"
—
Notes: Gap 0.024" Exc. Race Kart
—
Notes: Gap 0.024"
—
Notes: Gap 0.020"
—
Notes: Gap 0.020"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.020" 3/4" Reach Spark Plug
—
Notes: 1983: Gap 0.024" Exc. Race Kart · 1984: Gap 0.024" Exc. Race Kart · 1985: Gap 0.024" Exc. Race Kart · 1986: Gap 0.028" Exc. Race Kart · 1987: Gap 0.028" Exc. Race Kart · 1988: Gap 0.028" Exc. Race Kart · 1989: Gap 0.028" Exc. Race Kart · 1990: Gap 0.028" Exc. Race Kart
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.024"
—
Notes: Gap 0.028" Exc. Race Kart
—
Notes: 2002: Gap 0.028" Exc. Race Kart · 2003: Gap 0.028" · 2004: Gap 0.028" · 2005: Gap 0.028" · 2006: Gap 0.028" · 2007: Gap 0.028" · 2008: Gap 0.028"
—
Notes: Gap 0.028"
—
Notes: Gap 0.028"
—
Notes: Gap 0.028"
—
Notes: Gap 0.028"
—
Notes: Gap 0.028"
—
Notes: Gap 0.024"
—
Notes: Gap 0.016"
—
Notes: Gap 0.024"
—
Notes: 1976: X Gap 0.024" · 1977: Gap 0.024" · 1978: Gap 0.024" · 1979: Gap 0.024" · 1980: Gap 0.024" · 1981: Gap 0.024"
—
Notes: Gap 0.022" Exc. Race Kart
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Notes: 2002: Gap 0.024" Exc. Race Kart · 2003: Gap 0.024" Exc. Race Kart · 2004: Gap 0.024" Exc. Race Kart · 2005: Gap 0.024" · 2006: Gap 0.024" · 2007: Gap 0.024" · 2008: Gap 0.024" · 2009: Gap 0.024" · 2010: Gap 0.024" · 2011: Gap 0.024" · 2012: Gap 0.024" · 2013: Gap 0.024" · 2014: Gap 0.024" · 2015: Gap 0.024" · 2016: Gap 0.024" · 2017: Gap 0.024" · 2018: Gap 0.024" · 2019: Gap 0.024" · 2020: Gap 0.024"