The crankshaft bearings and SPI gaskets are the most important parts of the engine, on which the reliability and smooth running of the engine depends. DOPPLER has opted for a combination of SKF C3 or C4 bearings, a polyamide cage and quality SPI gaskets.
- APRILIA RS
(50
cc)
From 2006
- APRILIA RS4
(50
cc)
From 2006
- APRILIA RS4
(50
cc)
From 2011 to 2017
- APRILIA RX
(50
cc)
From 2006
- APRILIA SX
(50
cc)
From 2006
- BULTACO LOBITO
(50
cc)
Until 2005
- CAGIVA MITO
(50
cc)
Until 2005
- DERBI GPR
(50
cc)
From 2006
- DERBI SENDA R DRD
(50
cc)
- DERBI SENDA R DRD PRO
(50
cc)
From 2006
- DERBI SENDA R DRD RACING
(50
cc)
From 2006
- DERBI SENDA R X-RACE
(50
cc)
- DERBI SENDA R X-TREME
(50
cc)
- DERBI SENDA SM DRD
(50
cc)
- DERBI SENDA SM DRD EVO
(50
cc)
From 2006
- DERBI SENDA SM DRD PRO
(50
cc)
From 2006 to 2011
- DERBI SENDA SM DRD PRO
(50
cc)
From 2006
- DERBI SENDA SM DRD RACING
(50
cc)
From 2006
- DERBI SENDA SM X-RACE
(50
cc)
- DERBI SENDA SM X-TREME
(50
cc)
From 2002 to 2012
- DERBI SENDA SM X-TREME
(50
cc)
From 2018
- DERBI SENDA SM X-TREME
(50
cc)
- GILERA GP 50
(50
cc)
Until 2005
- GILERA RCR
(50
cc)
From 2011 to 2017
- GILERA RCR
(50
cc)
- GILERA SMT
(50
cc)
From 2011 to 2017
- GILERA SMT
(50
cc)