Currently looking for rear sway bar for my 6th gen. LX and got this info. Think is valuable and share it:

Honda OEM sway bar sizes:

2007-present Fit/Jazz: 21mm/F - n/a/R

1986-1989 All Models - 17mm/F - 17mm/R(the only reason i included it cause it was w/other info)
1988-1991 Crx HF: 17.2mm/F(hollow) - n/a/R
1988-1991 Crx Dx: 18mm/F(solid) - n/a/R
1988-1991 Crx Si: 18mm/F(solid) - 15mm/R
1988-1991 Civic Sdn: 19mm/F(solid) - 15mm/R
1992-1995 Civic Dx: n/a/F - n/a/R(coupes didn't come w/sway bars)
1992-1995 Civic VX: 19mm/F(soild) - n/a/R
1992-1995 Civic EX: 21mm - n/a/R
1992-1995 Civic Si: 21mm/F - 13mm/R (4drs Ex sdn cars did too)
1994-1997 Del Sol DOHC: 24mm/R - 15mm/R
1996-2000 Civic HX: 22mm/F- n/a/R
1996-2000 Civic EX: 22mm/F - n/a/R
1999-2000 Civic Si: 26mm/ - 13mm/R(4drs sdn cars too)
1997-2000 Civic Type R: 26mm/F - 22mm/R
2001-2005 Civic Dx:
2001-2005 Civic Ex:
2001-2005 Civic Hx:
2001-2005 Civic Lx: 25.4mm/F - n/a/R
2001-2003 Civic Si Hb: 25.4mm/F - 15mm/R
2004-2005 Civic Si Hb: 25.4mm/F - 17mm/R
2006-present Civic Dx: 25.4mm/F - n/a/R
2006-present Civic Lx/Ex: 25.4mm/F - 11.mm
2006-present Civic Si Coupe: 28mm/F(solid) - 17mm/R
2007-present Civic Si Sdn: 27mm/F(solid) - 17mm/R

1986-1989 All Models - 17mm/F - 17mm/R(the only reason i included it cause it was w/other info)
1990-1993 Integra Coupe/3dr: 23mm/F - 14.7mm/R
1990-1993 Integra Sdn 4dr: 23mm/F - 15.9mm/R
1994-1999 Integra RS/LS/GS/SE Coupe: 22mm/F - 12.9mm/R
1994-1999 Integra RS/LS/GS/SE Sdn: 22mm/F - 14mm/R
2000-2001 LS/GS Coupe - 24mm/F - 12.9mm/R
2000-20001 LS/GS Sedan - 24mm/F - 14mm/R
1994-2001 Integra GSR: 24mm/F - 14mm/R
1997-2001 Integra Type R: 24mm - 23mm/R(JDM) -22mm/R(USDM)

2002-2004 RSX: 23mm/F - 19mm/R
2005-2006 RSX:

2004-present TSX:

1988-1991 Prelude: 25.4/F - 17mm/R(this the only one i question cause i rememeber pulling the both bars and they was the same size as the 90-91 Integra)
1992-1996 prelude: 24.2mm/F - 23mm/R
1997-2001 Prelude: 25.4mm/F - 23.5mm/R

2000-2001 S2000: 28.2mm/F - 27.2mm/R
2002-2003 S2000: 26.5mm/F - 25.5mm/R
2004-present S2000: 26.5mm/F - 25.4mm/R

(I posted the NSX... yeah, like we can afford them and they have a second # i didn't post. if you see the sway bar # you know. it's like 21x3mm.)
1991-1992 NSX: 18.3mm/F 17.5mm/R
1993-1994 NSX-R: 21mm/R - 17.5mm/R
1995-1996 NSX-R: 21mm/F - 19.1mm/R
1997 NSX-S, Zero and Zanardi: 18.3mm/F - 19.1mm/R
1997-2001 NSX: 18.3mm/F - 17.5mm/R
2002-2005 NSX-R: 22.2mm - 17.5mm/R

CIVIC4G.COM - Honda Civic 4th Generation (1988-1991) Forum