This POWER VALVE SYSTEM 2-stroke engine top end regulates the exhaust opening time for excellent performance at low revs and optimised performance higher in the rev range.
- ATHENA Power Valve System: "guillotine valve" installed with a pneumatic system
- Operates using exhaust gas pressure
- Optimises performance and retains maximum reliability
- Supplied with 241012 piston and 601494 gaskets
-
| APRILIA |
RS 50 |
50 |
2010 |
|
| APRILIA |
RS 50 |
50 |
2009 |
|
| APRILIA |
RS 50 |
50 |
2008 |
|
| APRILIA |
RS 50 |
50 |
2007 |
|
| APRILIA |
RS 50 |
50 |
2006
|
| APRILIA |
RS4 50 |
50 |
2016 |
|
| APRILIA |
RS4 50 |
50 |
2015 |
|
| APRILIA |
RS4 50 |
50 |
2014 |
|
| APRILIA |
RS4 50 |
50 |
2013 |
|
| APRILIA |
RS4 50 |
50 |
2012 |
|
| APRILIA |
RS4 50 |
50 |
2011 |
| APRILIA |
RX 50 |
50 |
2015 |
|
| APRILIA |
RX 50 |
50 |
2014 |
|
| APRILIA |
RX 50 |
50 |
2013 |
|
| APRILIA |
RX 50 |
50 |
2012 |
|
| APRILIA |
RX 50 |
50 |
2011 |
|
| APRILIA |
RX 50 |
50 |
2010 |
|
| APRILIA |
RX 50 |
50 |
2009 |
|
| APRILIA |
RX 50 |
50 |
2008 |
|
| APRILIA |
RX 50 |
50 |
2007 |
| APRILIA |
SX 50 |
50 |
2012 |
|
| APRILIA |
SX 50 |
50 |
2011 |
|
| APRILIA |
SX 50 |
50 |
2010 |
|
| APRILIA |
SX 50 |
50 |
2009 |
|
| APRILIA |
SX 50 |
50 |
2008 |
|
| APRILIA |
SX 50 |
50 |
2007 |
|
| APRILIA |
SX 50 |
50 |
2006 |
| DERBI |
GPR 50 R NUDE |
50 |
2008 |
|
| DERBI |
GPR 50 R NUDE |
50 |
2007 |
|
| DERBI |
GPR 50 R NUDE |
50 |
2006 |
| DERBI |
GPR 50 RACING |
50 |
2010 |
|
| DERBI |
GPR 50 RACING |
50 |
2009 |
|
| DERBI |
GPR 50 RACING |
50 |
2008 |
|
| DERBI |
GPR 50 RACING |
50 |
2007 |
|
| DERBI |
GPR 50 RACING |
50 |
2006 |
| DERBI |
GPR 50 REPLICA MALOSSI |
50 |
2007 |
| DERBI |
GPR 50 REPLICA PESEK |
50 |
2007 |
| DERBI |
GPR 50 REPLICA |
50 |
2008 |
|
| DERBI |
GPR 50 REPLICA |
50 |
2007 |
| DERBI |
GPR 50 R |
50 |
2010 |
|
| DERBI |
GPR 50 R |
50 |
2009 |
|
| DERBI |
GPR 50 R |
50 |
2008 |
|
| DERBI |
GPR 50 R |
50 |
2007 |
|
| DERBI |
GPR 50 R |
50 |
2006 |
| DERBI |
SENDA 50 HYP DRD EVO |
50 |
2012 |
|
| DERBI |
SENDA 50 HYP DRD EVO |
50 |
2011 |
|
| DERBI |
SENDA 50 HYP DRD EVO |
50 |
2010 |
|
| DERBI |
SENDA 50 HYP DRD EVO |
50 |
2009 |
|
| DERBI |
SENDA 50 HYP DRD EVO |
50 |
2008 |
| DERBI |
SENDA 50 R DRD PRO |
50 |
2015 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2014 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2013 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2012 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2011 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2010 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2009 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2008 |
|
| DERBI |
SENDA 50 R DRD PRO |
50 |
2007 |
| DERBI |
SENDA 50 R DRD RACING |
50 |
2015 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2014 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2013 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2012 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2011 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2010 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2009 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2008 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2007 |
|
| DERBI |
SENDA 50 R DRD RACING |
50 |
2006 |
| DERBI |
SENDA 50 R DRD SM |
50 |
2011 |
|
| DERBI |
SENDA 50 R DRD SM |
50 |
2010 |
|
| DERBI |
SENDA 50 R DRD SM |
50 |
2009 |
|
| DERBI |
SENDA 50 R DRD SM |
50 |
2008 |
|
| DERBI |
SENDA 50 R DRD SM |
50 |
2007 |
|
| DERBI |
SENDA 50 R DRD SM |
50 |
2006 |
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2019 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2018 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2017 |
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2016 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2015 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2014 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2013 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2012 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2011 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2010 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2009 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2008 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2007 |
|
| DERBI |
SENDA 50 R DRD X-TREM |
50 |
2006 |
| DERBI |
SENDA 50 R DRD |
50 |
2011 |
|
| DERBI |
SENDA 50 R DRD |
50 |
2010 |
|
| DERBI |
SENDA 50 R DRD |
50 |
2009 |
|
| DERBI |
SENDA 50 R DRD |
50 |
2008 |
|
| DERBI |
SENDA 50 R DRD |
50 |
2007 |
|
| DERBI |
SENDA 50 R DRD |
50 |
2006 |
| DERBI |
SENDA 50 R X-RACE |
50 |
2011 |
|
| DERBI |
SENDA 50 R X-RACE |
50 |
2010 |
|
| DERBI |
SENDA 50 R X-RACE |
50 |
2009 |
| DERBI |
SENDA 50 R X-RACE |
50 |
2008 |
|
| DERBI |
SENDA 50 R X-RACE |
50 |
2007 |
|
| DERBI |
SENDA 50 R X-RACE |
50 |
2006 |
| DERBI |
SENDA 50 SM DRD BLACK EDITION |
50 |
2008 |
|
| DERBI |
SENDA 50 SM DRD BLACK EDITION |
50 |
2007 |
|
| DERBI |
SENDA 50 SM DRD BLACK EDITION |
50 |
2006 |
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2019 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2018 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2017 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2016 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2015 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2014 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2013 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2012 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2011 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2010 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2009 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2008 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2007 |
|
| DERBI |
SENDA 50 SM DRD RACING |
50 |
2006 |
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2019 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2018 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2017 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2016 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2015 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2014 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2013 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2012 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2011 |
|
| DERBI |
SENDA 50 SM DRD X-TREM |
50 |
2010 |
| DERBI |
SENDA 50 SM DRD |
50 |
2011 |
|
| DERBI |
SENDA 50 SM DRD |
50 |
2010 |
|
| DERBI |
SENDA 50 SM DRD |
50 |
2009 |
|
| DERBI |
SENDA 50 SM DRD |
50 |
2008 |
|
| DERBI |
SENDA 50 SM DRD |
50 |
2007 |
|
| DERBI |
SENDA 50 SM DRD |
50 |
2006 |
| DERBI |
SENDA 50 SM X-RACE |
50 |
2010 |
|
| DERBI |
SENDA 50 SM X-RACE |
50 |
2009 |
|
| DERBI |
SENDA 50 SM X-RACE |
50 |
2008 |
| DERBI |
SENDA 50 SM X-TREM |
50 |
2013 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2012 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2011 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2010 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2009 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2008 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2007 |
|
| DERBI |
SENDA 50 SM X-TREM |
50 |
2006
|
| DERBI |
SENDA RACING 50 SM |
50 |
2022 |
|
| DERBI |
SENDA RACING 50 SM |
50 |
2021 |
|
| DERBI |
SENDA RACING 50 SM |
50 |
2020 |
| DERBI |
SENDA X-TREME 50 R |
50 |
2022 |
|
| DERBI |
SENDA X-TREME 50 R |
50 |
2021 |
|
| DERBI |
SENDA X-TREME 50 R |
50 |
2020 |
| DERBI |
SENDA X-TREME 50 SM |
50 |
2022 |
|
| DERBI |
SENDA X-TREME 50 SM |
50 |
2021 |
|
| DERBI |
SENDA X-TREME 50 SM |
50 |
2020 |
| GILERA |
RCR 50 |
50 |
2007 |
|
| GILERA |
RCR 50 |
50 |
2006 |
| GILERA |
SMT 50 |
50 |
2007 |
|
| GILERA |
SMT 50 |
50 |
2006 |

"ATHENA" Motorcycle parts manufacturer located in Italy in 1973.
| Brand |
Model |
Year |
Name |
CC |
| DERBI |
GPR |
2006 |
|
50 |
| DERBI |
GPR |
2006 |
|
50 |
| DERBI |
GPR |
2007 |
|
50 |
| DERBI |
GPR |
2007 |
|
50 |
| DERBI |
GPR |
2008 |
|
50 |
| DERBI |
GPR |
2008 |
|
50 |
| DERBI |
SENDA |
2006 |
X-Race |
50 |
| DERBI |
SENDA |
2006 |
X-Treme |
50 |
| DERBI |
SENDA |
2006 |
Racing |
50 |
| DERBI |
SENDA |
2006 |
X-Treme |
50 |
| DERBI |
SENDA |
2006 |
X-Race |
50 |
| DERBI |
SENDA |
2006 |
Racing |
50 |
| DERBI |
SENDA |
2007 |
X-Race |
50 |
| DERBI |
SENDA |
2007 |
X-Treme |
50 |
| DERBI |
SENDA |
2007 |
Racing |
50 |
| DERBI |
SENDA |
2007 |
X-Treme |
50 |
| DERBI |
SENDA |
2007 |
X-Race |
50 |
| DERBI |
SENDA |
2007 |
Racing |
50 |
| DERBI |
SENDA |
2008 |
X-Race |
50 |
| DERBI |
SENDA |
2008 |
X-Treme |
50 |
| DERBI |
SENDA |
2008 |
Racing |
50 |
| DERBI |
SENDA |
2008 |
X-Race |
50 |
| DERBI |
SENDA |
2008 |
X-Treme |
50 |
| DERBI |
SENDA |
2008 |
Racing |
50 |
| DERBI |
SENDA |
2008 |
Evo |
50 |
| DERBI |
SENDA |
2006 |
Pro |
50 |
| DERBI |
SENDA |
2007 |
Pro |
50 |
| DERBI |
SENDA |
2008 |
Pro |
50 |
| DERBI |
SENDA |
2009 |
Pro |
50 |
| DERBI |
SENDA |
2010 |
Pro |
50 |
| DERBI |
SENDA |
2006 |
Pro |
50 |
| DERBI |
SENDA |
2007 |
Pro |
50 |
| DERBI |
SENDA |
2008 |
Pro |
50 |
| DERBI |
SENDA |
2009 |
Pro |
50 |
| DERBI |
SENDA |
2010 |
Pro |
50 |
| DERBI |
SENDA |
2009 |
X-Treme |
50 |
| DERBI |
SENDA |
2010 |
X-Treme |
50 |
| DERBI |
SENDA |
2009 |
X-Treme |
50 |
| DERBI |
SENDA |
2010 |
X-Treme |
50 |
| DERBI |
SENDA |
2009 |
X-Race |
50 |
| DERBI |
SENDA |
2010 |
X-Race |
50 |
| DERBI |
SENDA |
2009 |
X-Race |
50 |
| DERBI |
SENDA |
2010 |
X-Race |
50 |
| GILERA |
SMT |
2006 |
|
50 |
| GILERA |
RCR |
2006 |
|
50 |
| APRILIA |
RS |
2010 |
|
50 |
| APRILIA |
RS |
2009 |
|
50 |
| APRILIA |
RS |
2008 |
|
50 |
| APRILIA |
RS |
2007 |
|
50 |
| APRILIA |
RS |
2006 |
|
50 |
| APRILIA |
RX |
2011 |
|
50 |
| APRILIA |
RX |
2010 |
|
50 |
| APRILIA |
RX |
2009 |
|
50 |
| APRILIA |
RX |
2008 |
|
50 |
| APRILIA |
RX |
2007 |
|
50 |
| APRILIA |
RX |
2006 |
|
50 |
| APRILIA |
SX |
2011 |
|
50 |
| APRILIA |
SX |
2012 |
|
50 |
| APRILIA |
SX |
2010 |
|
50 |
| APRILIA |
SX |
2009 |
|
50 |
| APRILIA |
SX |
2008 |
|
50 |
| APRILIA |
SX |
2007 |
|
50 |
| APRILIA |
SX |
2006 |
|
50 |
| APRILIA |
RS4 |
2011 |
|
50 |
| DERBI |
GPR |
2009 |
|
50 |
| DERBI |
GPR |
2010 |
|
50 |
| DERBI |
GPR |
2009 |
|
50 |
| DERBI |
GPR |
2010 |
|
50 |
| DERBI |
SENDA |
2011 |
Pro |
50 |
| DERBI |
SENDA |
2011 |
Pro |
50 |
| DERBI |
SENDA |
2011 |
X-Treme |
50 |
| DERBI |
SENDA |
2011 |
X-Treme |
50 |
| DERBI |
SENDA |
2011 |
X-Race |
50 |
| DERBI |
SENDA |
2011 |
X-Race |
50 |
| DERBI |
SENDA |
2010 |
Racing |
50 |
| DERBI |
SENDA |
2010 |
Racing |
50 |
| DERBI |
SENDA |
2011 |
Racing |
50 |
| DERBI |
SENDA |
2011 |
Racing |
50 |
| DERBI |
SENDA |
2010 |
Evo |
50 |
| DERBI |
SENDA |
2011 |
Evo |
50 |
| DERBI |
SENDA |
2012 |
X-Treme |
50 |
| DERBI |
SENDA |
2012 |
X-Treme |
50 |
| DERBI |
SENDA |
2012 |
Pro |
50 |
| DERBI |
SENDA |
2012 |
X-Treme |
50 |
| DERBI |
SENDA |
2012 |
Racing |
50 |
| DERBI |
SENDA |
2012 |
X-Treme |
50 |
| DERBI |
SENDA |
2012 |
Evo |
50 |
| DERBI |
SENDA |
2012 |
Pro |
50 |
| DERBI |
SENDA |
2012 |
Racing |
50 |
| DERBI |
SENDA |
2009 |
Racing |
50 |
| APRILIA |
RX |
2012 |
|
50 |
| APRILIA |
RS4 |
2012 |
|
50 |
| APRILIA |
RS4 |
2012 |
Replica |
50 |
| APRILIA |
RS4 |
2013 |
|
50 |
| APRILIA |
RS4 |
2013 |
Replica |
50 |
| APRILIA |
RX |
2013 |
|
50 |
| DERBI |
SENDA |
2013 |
X-Treme |
50 |
| DERBI |
SENDA |
2013 |
Pro |
50 |
| DERBI |
SENDA |
2013 |
Racing |
50 |
| DERBI |
SENDA |
2013 |
Pro |
50 |
| DERBI |
SENDA |
2013 |
Racing |
50 |
| DERBI |
SENDA |
2013 |
X-Treme |
50 |
| APRILIA |
RS4 |
2014 |
|
50 |
| APRILIA |
RS4 |
2014 |
Replica |
50 |
| APRILIA |
RX |
2014 |
|
50 |
| DERBI |
SENDA |
2014 |
X-Treme |
50 |
| DERBI |
SENDA |
2014 |
Racing |
50 |
| DERBI |
SENDA |
2014 |
Racing |
50 |
| DERBI |
SENDA |
2014 |
X-Treme |
50 |
| DERBI |
SENDA |
2015 |
Racing |
50 |
| DERBI |
SENDA |
2015 |
X-Treme |
50 |
| DERBI |
SENDA |
2015 |
X-Treme |
50 |
| DERBI |
SENDA |
2015 |
Racing |
50 |
| APRILIA |
RS4 |
2015 |
|
50 |
| APRILIA |
RS4 |
2015 |
Replica |
50 |
| APRILIA |
RX |
2015 |
|
50 |
| APRILIA |
RS4 |
2016 |
|
50 |
| APRILIA |
RS4 |
2016 |
Replica |
50 |
| DERBI |
SENDA |
2016 |
X-Treme |
50 |
| DERBI |
SENDA |
2016 |
Racing |
50 |
| DERBI |
SENDA |
2016 |
X-Treme |
50 |
| DERBI |
SENDA |
2017 |
X-Treme |
50 |
| DERBI |
SENDA |
2017 |
Racing |
50 |
| DERBI |
SENDA |
2017 |
X-Treme |
50 |
| DERBI |
SENDA |
2018 |
Racing |
50 |
| DERBI |
SENDA |
2018 |
X-Treme |
50 |
| DERBI |
SENDA |
2018 |
Limited |
50 |
| DERBI |
SENDA |
2019 |
Racing |
50 |
| DERBI |
SENDA |
2019 |
X-Treme |
50 |
| DERBI |
SENDA |
2019 |
Limited |
50 |
| DERBI |
SENDA |
2018 |
X-Treme |
50 |
| DERBI |
SENDA |
2019 |
X-Treme |
50 |
| DERBI |
SENDA |
2020 |
Racing |
50 |
| DERBI |
SENDA |
2020 |
X-Treme |
50 |
| DERBI |
SENDA |
2020 |
Limited |
50 |
| DERBI |
SENDA |
2020 |
X-Treme |
50 |
| GILERA |
STALKER |
2007 |
Special Edition |
50 |
| GILERA |
STALKER |
2008 |
Special Edition |
50 |
| GILERA |
SMT |
2011 |
|
50 |
| GILERA |
SMT |
2012 |
|
50 |
| GILERA |
SMT |
2013 |
|
50 |
| GILERA |
SMT |
2014 |
|
50 |
| GILERA |
SMT |
2015 |
|
50 |
| GILERA |
SMT |
2016 |
|
50 |
| GILERA |
SMT |
2017 |
|
50 |
| GILERA |
SMT |
2011 |
Racing |
50 |
| GILERA |
SMT |
2012 |
Racing |
50 |
| GILERA |
SMT |
2018 |
|
50 |
| GILERA |
SMT |
2019 |
|
50 |
| GILERA |
SMT |
2020 |
|
50 |
| GILERA |
SMT |
2019 |
Drifting |
50 |
| GILERA |
SMT |
2020 |
Drifting |
50 |