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28861-07A Automatic Compression Release
Fits: Fits '07-'17 Twin Cam-equipped mode…
Fits '07-'17 Twin Cam-equipped models. Can be used with Original Equipment or Screamin' Eagle Cylinder Heads. Does not fit with Twin-Cooled engines.
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£46.80
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Estimated delivery: 3–15 working days
Part #: 28861-07A
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Specifications
- Brand
- Harley-Davidson Accessories
- Part Number
- 28861-07A
- OEM Reference
- —
- Pack Quantity
- Each
- Category
- Builder Components
- VAT Rate
- 20%
About This Product
Automatic Compression Release (ACR) valves reduce the strain of starting your high performance motor by reducing cylinder compression - automatically! The engine is easier to turn over resulting in less wear on your starter and battery. After start, the ACR valves close to restore full compression.
- ACR can be installed on stock or Screamin' Eagle Performance cylinder heads for all '07-later Twin Cam equipped models
- Install requires machining to be performed by a competent machinist using the Screamin' Eagle Automatic Compression Release Fixture Kit P/N 94648-08 (sold separately)
- Installation requires separate purchase of model specific ACR Wiring Harness
Manufacturer part number: 28861-07A.
Fitment
154 modelsFits '07-'17 Twin Cam-equipped models. Can be used with Original Equipment or Screamin' Eagle Cylinder Heads. Does not fit with Twin-Cooled engines.
Cvo/Custom 53 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2014 | CVO ROAD KING (FLHR 103) (FLHR 103) |
| Harley-Davidson | 2007 | CVO ROAD KING (JAPAN) (FLHR3) FLHR3 |
| Harley-Davidson | 2008 | CVO ROAD KING (JAPAN) (FLHR4) FLHR4 |
| Harley-Davidson | 2008 | CVO ROAD KING ANV (JAPAN) (FLHR4 ANV) FLHR4 ANV |
| Harley-Davidson | 2014 | CVO ROAD KING (FLHRSE) (FLHRSE) |
| Harley-Davidson | 2007 | CVO ROAD KING (FLHRSE3) FLHRSE3 |
| Harley-Davidson | 2008 | CVO ROAD KING (FLHRSE4) FLHRSE4 |
| Harley-Davidson | 2008 | CVO ROAD KING ANV (FLHRSE4 ANV) FLHRSE4 ANV |
| Harley-Davidson | 2013 | CVO ROAD KING (FLHRSE5) FLHRSE5 |
| Harley-Davidson | 2013 | CVO ROAD KING ANV (FLHRSE5 ANV) FLHRSE5 ANV |
| Harley-Davidson | 2008 | CVO ULTRA CLASSIC (JAPAN) (FLHTCU3) FLHTCU3 |
| Harley-Davidson | 2008 | CVO ULTRA CLASSIC ANV (FLHTCU3 ANV) FLHTCU3 ANV |
| Harley-Davidson | 2009 | CVO ULTRA CLASSIC (JAPAN) (FLHTCU4) FLHTCU4 |
| Harley-Davidson | 2013 | 103 1PRM CVO ULTRA CLASSIC FLHTCU8 |
| Harley-Davidson | 2013 | CVO ULTRA CLASSIC (FLHTCU8 103) FLHTCU8 103 |
| Harley-Davidson | 2013 | CVO ULTRA CLASSIC ANV (FLHTCU8 103 ANV) FLHTCU8 103 ANV |
| Harley-Davidson | 2007 | CVO ULTRA CLASSIC (FLHTCUSE2) FLHTCUSE2 |
| Harley-Davidson | 2008 | CVO ULTRA CLASSIC (FLHTCUSE3) FLHTCUSE3 |
| Harley-Davidson | 2008 | CVO ULTRA CLASSIC ANV (FLHTCUSE3 ANV) FLHTCUSE3 ANV |
| Harley-Davidson | 2009 | CVO ULTRA CLASSIC (FLHTCUSE4) FLHTCUSE4 |
| Harley-Davidson | 2010 | CVO ULTRA CLASSIC (FLHTCUSE5) FLHTCUSE5 |
| Harley-Davidson | 2010 | CVO ULTRA CLASSIC BLACK (FLHTCUSE5 BLK) FLHTCUSE5 BLK |
| Harley-Davidson | 2011 | CVO ULTRA CLASSIC (FLHTCUSE6) FLHTCUSE6 |
| Harley-Davidson | 2012 | CVO ULTRA CLASSIC (FLHTCUSE7) FLHTCUSE7 |
| Harley-Davidson | 2013 | CVO ULTRA CLASSIC (FLHTCUSE8) FLHTCUSE8 |
| Harley-Davidson | 2013 | CVO ULTRA CLASSIC ANV (FLHTCUSE8 ANV) FLHTCUSE8 ANV |
| Harley-Davidson | 2014 | CVO LIMITED (FLHTK 103) (FLHTK 103) |
| Harley-Davidson | 2014–2017 | CVO LIMITED (FLHTKSE) (FLHTKSE) |
| Harley-Davidson | 2010–2017 | CVO™ STREET GLIDE® (FLHXSE) |
| Harley-Davidson | 2011 | CVO STREET GLIDE (FLHXSE2) FLHXSE2 |
| Harley-Davidson | 2012 | CVO STREET GLIDE (FLHXSE3) FLHXSE3 |
| Harley-Davidson | 2014–2015 | CVO SOFTAIL DELUXE (FLSTNSE) (FLSTNSE) |
| Harley-Davidson | 2010 | CVO SOFTAIL CONVERTIBLE (FLSTSE) FLSTSE |
| Harley-Davidson | 2011 | CVO SOFTAIL CONVERTIBLE (FLSTSE2) FLSTSE2 |
| Harley-Davidson | 2012 | CVO SOFTAIL CONVERTIBLE (FLSTSE3) FLSTSE3 |
| Harley-Davidson | 2009 | CVO ROAD GLIDE (JAPAN) (FLTR3) FLTR3 |
| Harley-Davidson | 2009 | CVO ROAD GLIDE (FLTRSE3) FLTRSE3 |
| Harley-Davidson | 2011–2016 | CVO ROAD GLIDE ULTRA (FLTRUSE) (FLTRUSE) |
| Harley-Davidson | 2012 | CVO ROAD GLIDE (FLTRXSE) (FLTRXSE) |
| Harley-Davidson | 2013 | CVO ROAD GLIDE (FLTRXSE2) FLTRXSE2 |
| Harley-Davidson | 2013 | CVO ROAD GLIDE ANV (FLTRXSE2 ANV) FLTRXSE2 ANV |
| Harley-Davidson | 2010 | CVO FAT BOB (JAPAN) (FXDF2) FXDF2 |
| Harley-Davidson | 2009 | CVO FAT BOB (FXDFSE) FXDFSE |
| Harley-Davidson | 2010 | CVO FAT BOB (FXDFSE2) FXDFSE2 |
| Harley-Davidson | 2007 | CVO DYNA (FXDSE) FXDSE |
| Harley-Davidson | 2008 | CVO DYNA (FXDSE2) FXDSE2 |
| Harley-Davidson | 2008 | CVO DYNA ANV (FXDSE2 ANV) FXDSE2 ANV |
| Harley-Davidson | 2013–2014 | CVO SOFTAIL BREAKOUT (FXSBSE) (FXSBSE) |
| Harley-Davidson | 2016–2017 | CVO PRO STREET BREAKOUT (FXSE) (FXSE) |
| Harley-Davidson | 2007 | CVO SOFTAIL SPRINGER (FXSTSSE) FXSTSSE |
| Harley-Davidson | 2008 | CVO SOFTAIL SPRINGER (FXSTSSE2) FXSTSSE2 |
| Harley-Davidson | 2008 | CVO SOFTAIL SPRINGER ANV (FXSTSSE2 ANV) FXSTSSE2 ANV |
| Harley-Davidson | 2009 | CVO SOFTAIL SPRINGER (FXSTSSE3) FXSTSSE3 |
Dyna 25 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2012–2016 | DYNA SWITCHBACK (FLD) (FLD) |
| Harley-Davidson | 2012–2016 | DYNA SWITCHBACK (FLD 103) (FLD 103) |
| Harley-Davidson | 2007–2010 | DYNA SUPER GLIDE (FXD) (FXD) |
| Harley-Davidson | 2007–2017 | DYNA STREET BOB (FXDB) (FXDB) |
| Harley-Davidson | 2014–2017 | DYNA STREET BOB 103 (FXDB 103) (FXDB 103) |
| Harley-Davidson | 2013 | DYNA STREET BOB (H-D1) (FXDBA) (FXDBA) |
| Harley-Davidson | 2013 | DYNA STREET BOB (H-D1) (FXDBA 103) (FXDBA 103) |
| Harley-Davidson | 2014–2015 | 103 1VCM DYNA STREET BOB (H-D1) (FXDBB) |
| Harley-Davidson | 2014–2015 | DYNA STREET BOB (H-D1) (FXDBB 103) (FXDBB 103) |
| Harley-Davidson | 2016 | DYNA STREET BOB LIMITED (FXDBC) (FXDBC) |
| Harley-Davidson | 2016 | DYNA STREET BOB LIMITED (FXDBC 103) (FXDBC 103) |
| Harley-Davidson | 2013–2016 | 103 1VAM DYNA STREET BOB (H-D1) (FXDBP) |
| Harley-Davidson | 2013–2016 | DYNA STREET BOB (H-D1) (FXDBP 103) (FXDBP 103) |
| Harley-Davidson | 2007–2014 | DYNA SUPER GLIDE CUSTOM (FXDC) (FXDC) |
| Harley-Davidson | 2014 | DYNA SUPER GLIDE CUSTOM (FXDC 103) (FXDC 103) |
| Harley-Davidson | 2008–2013 | DYNA SUPER GLIDE CUSTOM ANV (FXDC ANV) (FXDC ANV) |
| Harley-Davidson | 2008–2017 | DYNA FAT BOB (FXDF) (FXDF) |
| Harley-Davidson | 2012–2017 | DYNA FAT BOB 103 (FXDF 103) (FXDF 103) |
| Harley-Davidson | 2007–2017 | DYNA LOW RIDER (FXDL) (FXDL) |
| Harley-Davidson | 2014–2017 | LOW RIDER 103 (FXDL 103) (FXDL 103) |
| Harley-Davidson | 2008 | DYNA LOW RIDER ANV (FXDL ANV) (FXDL ANV) |
| Harley-Davidson | 2016–2017 | DYNA LOW RIDER S (FXDLS) (FXDLS) |
| Harley-Davidson | 2007–2017 | DYNA WIDE GLIDE (FXDWG) (FXDWG) |
| Harley-Davidson | 2012–2017 | DYNA WIDE GLIDE 103 (FXDWG 103) (FXDWG 103) |
| Harley-Davidson | 2008 | DYNA WIDE GLIDE 105TH ANV (FXDWG ANV) (FXDWG ANV) |
Softail 35 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2012–2017 | HYDRA-GLIDE (1952) HYDRA-GLIDE FLS (FLS) |
| Harley-Davidson | 2012–2015 | SOFTAIL SLIM (FLS 103) (FLS 103) |
| Harley-Davidson | 2016–2017 | SLIM S (FLSS) (FLSS) |
| Harley-Davidson | 2008–2010 | HERITAGE SOFTAIL (FLST) (FLST) |
| Harley-Davidson | 2007–2017 | HERITAGE SOFTAIL CLASSIC (FLSTC) (FLSTC) |
| Harley-Davidson | 2012–2015 | HERITAGE SOFTAIL CLASSIC (FLSTC 103) (FLSTC 103) |
| Harley-Davidson | 2013 | HERITAGE SOFTAIL CLASSIC ANV (FLSTC 103 ANV) (FLSTC 103 ANV) |
| Harley-Davidson | 2012–2014 | HERITAGE SOFTAIL CLASSIC SHRINE (FLSTC 103 SHRINE) (FLSTC 103 SHRINE) |
| Harley-Davidson | 2008–2013 | HERITAGE SOFTAIL CLASSIC ANV (FLSTC ANV) (FLSTC ANV) |
| Harley-Davidson | 2007–2011 | HERITAGE SOFTAIL CLASSIC SHRINE (FLSTC SHRINE) (FLSTC SHRINE) |
| Harley-Davidson | 2007–2017 | FAT BOY (FLSTF) (FLSTF) |
| Harley-Davidson | 2012–2015 | FAT BOY (FLSTF 103) (FLSTF 103) |
| Harley-Davidson | 2008 | FAT BOY ANV (FLSTF ANV) (FLSTF ANV) |
| Harley-Davidson | 2007–2011 | FAT BOY SHRINE (FLSTF SHRINE) (FLSTF SHRINE) |
| Harley-Davidson | 2010–2017 | FAT BOY LO (FLSTFB) (FLSTFB) |
| Harley-Davidson | 2012–2015 | FAT BOY LO (FLSTFB 103) (FLSTFB 103) |
| Harley-Davidson | 2013 | FAT BOY LO ANV (FLSTFB 103 ANV) (FLSTFB 103 ANV) |
| Harley-Davidson | 2013 | FAT BOY LO ANV (FLSTFB ANV) (FLSTFB ANV) |
| Harley-Davidson | 2016–2017 | FAT BOY S (FLSTFBS) (FLSTFBS) |
| Harley-Davidson | 2007–2017 | SOFTAIL DELUXE (FLSTN) (FLSTN) |
| Harley-Davidson | 2012–2015 | SOFTAIL DELUXE (FLSTN 103) (FLSTN 103) |
| Harley-Davidson | 2008 | SOFTAIL DELUXE ANV (FLSTN ANV) (FLSTN ANV) |
| Harley-Davidson | 2008–2011 | CROSS BONES (FLSTSB) (FLSTSB) |
| Harley-Davidson | 2007 | SPRINGER CLASSIC (FLSTSC) (FLSTSC) |
| Harley-Davidson | 2008–2009 | ROCKER (FXCW) (FXCW) |
| Harley-Davidson | 2008–2011 | ROCKER C (FXCWC) (FXCWC) |
| Harley-Davidson | 2011–2013 | BLACKLINE (FXS) (FXS) |
| Harley-Davidson | 2012–2013 | BLACKLINE (FXS 103) (FXS 103) |
| Harley-Davidson | 2013–2017 | BREAKOUT (FXSB) (FXSB) |
| Harley-Davidson | 2013–2015 | SOFTAIL BREAKOUT (FXSB 103) (FXSB 103) |
| Harley-Davidson | 2007–2015 | SOFTAIL STANDARD (FXST) (FXST) |
| Harley-Davidson | 2007–2009 | NIGHT TRAIN (FXSTB) (FXSTB) |
| Harley-Davidson | 2007–2010 | SOFTAIL CUSTOM (FXSTC) (FXSTC) |
| Harley-Davidson | 2008 | SOFTAIL CUSTOM ANV (FXSTC ANV) (FXSTC ANV) |
| Harley-Davidson | 2007 | SOFTAIL DEUCE (FXSTD) (FXSTD) |
Touring 37 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2007–2017 | ROAD KING (FLHR) (FLHR) |
| Harley-Davidson | 2011 | CVO ROAD KING (FLHR 103) (FLHR 103) |
| Harley-Davidson | 2013 | ROAD KING ANV (FLHR ANV) (FLHR ANV) |
| Harley-Davidson | 2007–2013 | ROAD KING SHRINE (FLHR SHRINE) (FLHR SHRINE) |
| Harley-Davidson | 2007–2017 | ROAD KING CLASSIC (FLHRC) (FLHRC) |
| Harley-Davidson | 2011 | ROAD KING CLASSIC (FLHRC 103) (FLHRC 103) |
| Harley-Davidson | 2008 | ROAD KING CLASSIC ANV (FLHRC ANV) (FLHRC ANV) |
| Harley-Davidson | 2007 | ROAD KING CUSTOM (FLHRS) (FLHRS) |
| Harley-Davidson | 2017 | TOURING ROAD KING SPECIAL (FLHRXS) (FLHRXS) |
| Harley-Davidson | 2007–2010 | ELECTRA GLIDE STANDARD (FLHT) (FLHT) |
| Harley-Davidson | 2007–2013 | ELECTRA GLIDE CLASSIC (FLHTC) (FLHTC) |
| Harley-Davidson | 2011 | ELECTRA GLIDE CLASSIC (FLHTC 103) (FLHTC 103) |
| Harley-Davidson | 2007–2017 | ULTRA CLASSIC (FLHTCU) (FLHTCU) |
| Harley-Davidson | 2011 | ULTRA CLASSIC (FLHTCU 103) (FLHTCU 103) |
| Harley-Davidson | 2008 | ULTRA CLASSIC ANV (FLHTCU ANV) (FLHTCU ANV) |
| Harley-Davidson | 2008 | ULTRA CLASSIC ANV WITH SIDECAR (JAPAN) (FLHTCU ANV WITH SIDECAR) (FLHTCU ANV WITH SIDECAR) |
| Harley-Davidson | 2007–2013 | ULTRA CLASSIC SHRINE (FLHTCU SHRINE) (FLHTCU SHRINE) |
| Harley-Davidson | 2014–2016 | ULTRA CLASSIC TWIN-COOLED (FLHTCU TC) (FLHTCU TC) |
| Harley-Davidson | 2007–2010 | ULTRA CLASSIC WITH SIDECAR (JAPAN) (FLHTCU WITH SIDECAR) (FLHTCU WITH SIDECAR) |
| Harley-Davidson | 2015–2016 | ULTRA CLASSIC LOW (FLHTCUL) (FLHTCUL) |
| Harley-Davidson | 2015–2016 | ULTRA CLASSIC LOW TWIN-COOLED (FLHTCUL TC) (FLHTCUL TC) |
| Harley-Davidson | 2010–2017 | ELECTRA GLIDE ULTRA LIMITED (FLHTK) (FLHTK) |
| Harley-Davidson | 2013 | TOURING ULTRA LIMITED ANNIVERSARY (FLHTK ANV) (FLHTK ANV) |
| Harley-Davidson | 2014–2017 | TOURING ULTRA LIMITED SHRINE EDITION (FLHTK SHRINE) (FLHTK SHRINE) |
| Harley-Davidson | 2011 | ULTRA LIMITED WITH SIDECAR (JAPAN) (FLHTK WITH SIDECAR) (FLHTK WITH SIDECAR) |
| Harley-Davidson | 2015–2017 | ULTRA LIMITED LOW (FLHTKL) (FLHTKL) |
| Harley-Davidson | 2007–2017 | TOURING STREET GLIDE (FLHX) (FLHX) |
| Harley-Davidson | 2011 | STREET GLIDE (FLHX 103) (FLHX 103) |
| Harley-Davidson | 2008 | TOURING STREET GLIDE ANNIVERSARY (FLHX ANV) (FLHX ANV) |
| Harley-Davidson | 2014 | STREET GLIDE SHRINE (FLHX SHRINE) (FLHX SHRINE) |
| Harley-Davidson | 2014–2017 | STREET GLIDE SPECIAL (FLHXS) (FLHXS) |
| Harley-Davidson | 2007–2009 | ROAD GLIDE (FLTR) (FLTR) |
| Harley-Davidson | 2008 | ROAD GLIDE ANV (FLTR ANV) (FLTR ANV) |
| Harley-Davidson | 2011–2017 | ROAD GLIDE ULTRA (FLTRU) (FLTRU) |
| Harley-Davidson | 2010–2017 | TOURING ROAD GLIDE (FLTRX) (FLTRX) |
| Harley-Davidson | 2011 | ROAD GLIDE CUSTOM (FLTRX 103) (FLTRX 103) |
| Harley-Davidson | 2015–2017 | TOURING ROAD GLIDE SPECIAL (FLTRXS) (FLTRXS) |
Trike 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2009–2017 | TRI GLIDE ULTRA CLASSIC (FLHTCUTG) (FLHTCUTG) |
| Harley-Davidson | 2013 | TRIKE TRI GLIDE ULTRA ANNIVERSARY (FLHTCUTG ANV) (FLHTCUTG ANV) |
| Harley-Davidson | 2010–2011 | STREET GLIDE TRIKE (FLHXXX) (FLHXXX) |
| Harley-Davidson | 2015–2017 | TRIKE FREEWHEELER (FLRT) (FLRT) |
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