MR103 Easy Start Camshaft kit
$1,070.95
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MR103 Easy Start Camshaft kit
$1,070.95
- Allows for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
- Designed as bolt-in cams for 103" engine with stock 9.7:1 compression ratio up to 10.5:1
- More power across the rpm range best results from 2500 rpm - 5500 rpm
- Includes camshafts, gearcover gasket, bearings, retaining ring, o-ring, threat lock and instructions
- Made in the USA
- Works with stock, un-ported heads, but is great for S&S CNC ported heads.
- Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
- Not for models with OEM compression releases.
Fitment Guide
| Year | Make | Model |
|---|---|---|
| 2006 | Harley-Davidson | FLHR Road King |
| 2006 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2006 | Harley-Davidson | FLSTCI Heritage Softail Classic |
| 2006 | Harley-Davidson | FLSTF Fat Boy |
| 2006 | Harley-Davidson | FLSTSCI Softail Springer Classic |
| 2006 | Harley-Davidson | FXSTDI Softail Deuce |
| 2006 | Harley-Davidson | FXSTI Softail Standard |
| 2005 | Harley-Davidson | FLHR Road King |
| 2005 | Harley-Davidson | FLHRS Road King Custom |
| 2005 | Harley-Davidson | FLHTC Electra Glide Classic |
| 2005 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2005 | Harley-Davidson | FLSTCI Heritage Softail Classic |
| 2005 | Harley-Davidson | FLSTSC Softail Springer Classic |
| 2005 | Harley-Davidson | FXD Dyna Super Glide |
| 2005 | Harley-Davidson | FXDC Super Glide Custom |
| 2005 | Harley-Davidson | FXDLI Dyna Low Rider |
| 2005 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 2005 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 2005 | Harley-Davidson | FXST Softail Standard |
| 2005 | Harley-Davidson | FXSTB Night Train |
| 2005 | Harley-Davidson | FXSTBI Night Train |
| 2004 | Harley-Davidson | FLHRI Road King |
| 2004 | Harley-Davidson | FLHRS Road King Custom |
| 2004 | Harley-Davidson | FLHT Electra Glide Standard |
| 2004 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2004 | Harley-Davidson | FXD Dyna Super Glide |
| 2004 | Harley-Davidson | FXDL Dyna Low Rider |
| 2004 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 2004 | Harley-Davidson | FXSTB Night Train |
| 2004 | Harley-Davidson | FXSTD Softail Deuce |
| 2004 | Harley-Davidson | FXSTDI Softail Deuce |
| 2004 | Harley-Davidson | FXSTS Springer Softail |
| 2004 | Harley-Davidson | FXSTSI Springer Softail |
| 2003 | Harley-Davidson | FLHR Road King |
| 2003 | Harley-Davidson | FLHRCI Road King Classic |
| 2003 | Harley-Davidson | FLHRI Road King |
| 2003 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2003 | Harley-Davidson | FLSTF Fat Boy |
| 2003 | Harley-Davidson | FXSTD Softail Deuce |
| 2003 | Harley-Davidson | FXSTS Springer Softail |
| 2003 | Harley-Davidson | FXSTSI Springer Softail |
| 2002 | Harley-Davidson | FLHTC Electra Glide Classic |
| 2002 | Harley-Davidson | FLSTCI Heritage Softail Classic |
| 2002 | Harley-Davidson | FLTR Road Glide |
| 2002 | Harley-Davidson | FLTRI Road Glide |
| 2002 | Harley-Davidson | FXD Dyna Super Glide |
| 2002 | Harley-Davidson | FXDL Dyna Low Rider |
| 2002 | Harley-Davidson | FXSTB Night Train |
| 2002 | Harley-Davidson | FXSTD Softail Deuce |
| 2002 | Harley-Davidson | FXSTDI Softail Deuce |
| 2001 | Harley-Davidson | FLHRI Road King |
| 2001 | Harley-Davidson | FLHTC Electra Glide Classic |
| 2001 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2001 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2001 | Harley-Davidson | FLSTSI Heritage Springer |
| 2001 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 2001 | Harley-Davidson | FXSTDI Softail Deuce |
| 2000 | Harley-Davidson | FLHR Road King |
| 2000 | Harley-Davidson | FLHRCI Road King Classic |
| 2000 | Harley-Davidson | FLHT Electra Glide Standard |
| 2000 | Harley-Davidson | FLTR Road Glide |
| 2000 | Harley-Davidson | FXD Dyna Super Glide |
| 2000 | Harley-Davidson | FXDL Dyna Low Rider |
| 2000 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 2000 | Harley-Davidson | FXST Softail Standard |
| 2000 | Harley-Davidson | FXSTD Softail Deuce |
| 2000 | Harley-Davidson | FXSTS Springer Softail |
| 1999 | Harley-Davidson | FLHR Road King |
| 1999 | Harley-Davidson | FLHT Electra Glide Standard |
| 1999 | Harley-Davidson | FLHTC Electra Glide Classic |
| 1999 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 1999 | Harley-Davidson | FLTR Road Glide |
| 1999 | Harley-Davidson | FXD Dyna Super Glide |
| 1999 | Harley-Davidson | FXDL Dyna Low Rider |
| 1999 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 1999 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 2006 | Harley-Davidson | FLHRCI Road King Classic |
| 2006 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2006 | Harley-Davidson | FLHTI Electra Glide Standard |
| 2006 | Harley-Davidson | FLHX Street Glide |
| 2006 | Harley-Davidson | FLSTI Heritage Softail |
| 2006 | Harley-Davidson | FLSTN Softail Deluxe |
| 2006 | Harley-Davidson | FLSTSC Softail Springer Classic |
| 2006 | Harley-Davidson | FLTRI Road Glide |
| 2006 | Harley-Davidson | FXST Softail Standard |
| 2006 | Harley-Davidson | FXSTB Night Train |
| 2006 | Harley-Davidson | FXSTSI Springer Softail |
| 2005 | Harley-Davidson | FLHRCI Road King Classic |
| 2005 | Harley-Davidson | FLHRSI Road King Custom |
| 2005 | Harley-Davidson | FLHTI Electra Glide Standard |
| 2005 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2005 | Harley-Davidson | FLSTF Fat Boy |
| 2005 | Harley-Davidson | FLSTN Softail Deluxe |
| 2005 | Harley-Davidson | FLSTSCI Softail Springer Classic |
| 2005 | Harley-Davidson | FXDCI Super Glide Custom |
| 2005 | Harley-Davidson | FXDWGI Dyna Wide Glide |
| 2005 | Harley-Davidson | FXSTDI Softail Deuce |
| 2005 | Harley-Davidson | FXSTI Softail Standard |
| 2005 | Harley-Davidson | FXSTSI Springer Softail |
| 2004 | Harley-Davidson | FLHRCI Road King Classic |
| 2004 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2004 | Harley-Davidson | FLSTF Fat Boy |
| 2004 | Harley-Davidson | FLSTFI Fat Boy |
| 2004 | Harley-Davidson | FLTRI Road Glide |
| 2004 | Harley-Davidson | FXDI Dyna Super Glide |
| 2004 | Harley-Davidson | FXDLI Dyna Low Rider |
| 2004 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 2004 | Harley-Davidson | FXDWGI Dyna Wide Glide |
| 2004 | Harley-Davidson | FXST Softail Standard |
| 2004 | Harley-Davidson | FXSTBI Night Train |
| 2003 | Harley-Davidson | FLHTC Electra Glide Classic |
| 2003 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2003 | Harley-Davidson | FLHTI Electra Glide Standard |
| 2003 | Harley-Davidson | FXDL Dyna Low Rider |
| 2003 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 2003 | Harley-Davidson | FXSTBI Night Train |
| 2003 | Harley-Davidson | FXSTDI Softail Deuce |
| 2003 | Harley-Davidson | FXSTI Softail Standard |
| 2002 | Harley-Davidson | FLHR Road King |
| 2002 | Harley-Davidson | FLHRCI Road King Classic |
| 2002 | Harley-Davidson | FLHRI Road King |
| 2002 | Harley-Davidson | FLHT Electra Glide Standard |
| 2002 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2002 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2002 | Harley-Davidson | FLSTS Heritage Springer |
| 2002 | Harley-Davidson | FLSTSI Heritage Springer |
| 2002 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 2002 | Harley-Davidson | FXST Softail Standard |
| 2002 | Harley-Davidson | FXSTBI Night Train |
| 2002 | Harley-Davidson | FXSTI Softail Standard |
| 2001 | Harley-Davidson | FLHRCI Road King Classic |
| 2001 | Harley-Davidson | FLHT Electra Glide Standard |
| 2001 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2001 | Harley-Davidson | FLSTCI Heritage Softail Classic |
| 2001 | Harley-Davidson | FXDL Dyna Low Rider |
| 2001 | Harley-Davidson | FXDXT Dyna Super Glide T-Sport |
| 2001 | Harley-Davidson | FXST Softail Standard |
| 2001 | Harley-Davidson | FXSTBI Night Train |
| 2001 | Harley-Davidson | FXSTI Softail Standard |
| 2001 | Harley-Davidson | FXSTS Springer Softail |
| 2001 | Harley-Davidson | FXSTSI Springer Softail |
| 2000 | Harley-Davidson | FLHRI Road King |
| 2000 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 2000 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2000 | Harley-Davidson | FLSTF Fat Boy |
| 2000 | Harley-Davidson | FLSTS Heritage Springer |
| 2000 | Harley-Davidson | FXDS-Conv Dyna Convertible |
| 2000 | Harley-Davidson | FXSTB Night Train |
| 1999 | Harley-Davidson | FLHRCI Road King Classic |
| 1999 | Harley-Davidson | FLTRI Road Glide |
| 1999 | Harley-Davidson | Road King EFI FLHR |
| 1999 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU |
| 2006 | Harley-Davidson | FLHRI Road King |
| 2006 | Harley-Davidson | FLHRS Road King Custom |
| 2006 | Harley-Davidson | FLHRSI Road King Custom |
| 2006 | Harley-Davidson | FLHT Electra Glide Standard |
| 2006 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2006 | Harley-Davidson | FLHXI Street Glide |
| 2006 | Harley-Davidson | FLST Heritage Softail |
| 2006 | Harley-Davidson | FLSTFI Fat Boy |
| 2006 | Harley-Davidson | FLSTNI Softail Deluxe |
| 2006 | Harley-Davidson | FXSTBI Night Train |
| 2006 | Harley-Davidson | FXSTD Softail Deuce |
| 2006 | Harley-Davidson | FXSTS Springer Softail |
| 2005 | Harley-Davidson | FLHRI Road King |
| 2005 | Harley-Davidson | FLHT Electra Glide Standard |
| 2005 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2005 | Harley-Davidson | FLSTFI Fat Boy |
| 2005 | Harley-Davidson | FLSTNI Softail Deluxe |
| 2005 | Harley-Davidson | FLTRI Road Glide |
| 2005 | Harley-Davidson | FXDI Dyna Super Glide |
| 2005 | Harley-Davidson | FXDL Dyna Low Rider |
| 2005 | Harley-Davidson | FXDXI Dyna Super Glide Sport |
| 2005 | Harley-Davidson | FXSTD Softail Deuce |
| 2005 | Harley-Davidson | FXSTS Springer Softail |
| 2004 | Harley-Davidson | FLHR Road King |
| 2004 | Harley-Davidson | FLHRSI Road King Custom |
| 2004 | Harley-Davidson | FLHTC Electra Glide Classic |
| 2004 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2004 | Harley-Davidson | FLHTI Electra Glide Standard |
| 2004 | Harley-Davidson | FLSTCI Heritage Softail Classic |
| 2004 | Harley-Davidson | FXDXI Dyna Super Glide Sport |
| 2004 | Harley-Davidson | FXSTI Softail Standard |
| 2003 | Harley-Davidson | FLHT Electra Glide Standard |
| 2003 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 2003 | Harley-Davidson | FLSTCI Heritage Softail Classic |
| 2003 | Harley-Davidson | FLSTFI Fat Boy |
| 2003 | Harley-Davidson | FLSTS Heritage Springer |
| 2003 | Harley-Davidson | FLSTSI Heritage Springer |
| 2003 | Harley-Davidson | FLTRI Road Glide |
| 2003 | Harley-Davidson | FXD Dyna Super Glide |
| 2003 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 2003 | Harley-Davidson | FXDXT Dyna Super Glide T-Sport |
| 2003 | Harley-Davidson | FXST Softail Standard |
| 2003 | Harley-Davidson | FXSTB Night Train |
| 2002 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2002 | Harley-Davidson | FLSTF Fat Boy |
| 2002 | Harley-Davidson | FLSTFI Fat Boy |
| 2002 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 2002 | Harley-Davidson | FXDXT Dyna Super Glide T-Sport |
| 2002 | Harley-Davidson | FXSTS Springer Softail |
| 2002 | Harley-Davidson | FXSTSI Springer Softail |
| 2001 | Harley-Davidson | FLHR Road King |
| 2001 | Harley-Davidson | FLSTF Fat Boy |
| 2001 | Harley-Davidson | FLSTS Heritage Springer |
| 2001 | Harley-Davidson | FLTR Road Glide |
| 2001 | Harley-Davidson | FLTRI Road Glide |
| 2001 | Harley-Davidson | FXD Dyna Super Glide |
| 2001 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 2001 | Harley-Davidson | FXSTB Night Train |
| 2001 | Harley-Davidson | FXSTD Softail Deuce |
| 2000 | Harley-Davidson | FLHTC Electra Glide Classic |
| 2000 | Harley-Davidson | FLHTCI Electra Glide Classic |
| 2000 | Harley-Davidson | FLTRI Road Glide |
| 2000 | Harley-Davidson | FXDX Dyna Super Glide Sport |
| 1999 | Harley-Davidson | FLHTCUI Electra Glide Ultra Classic |
| 1999 | Harley-Davidson | FXDS-Conv Dyna Convertible |
| 2005 | Harley-Davidson | 15th Anniversary Fat Boy FLSTF |