PBR aluminium rear sprocket, 420 pitch for BETA RRT 50, RRT 50 MOTARD and FANTIC ENDURO 50, ENDURO 50 ER COMPETIZIONE

PBR offers this rear sprocket for BETA RRT 50, RRT 50 ENDURO TRACK, RRT 50 ENDURO X-SERIES, RRT 50 MOTARD, RRT 50 MOTARD X-SERIES and FANTIC ENDURO 50, ENDURO 50 E PERFORMANCE, ENDURO 50 ER COMPETIZIONE, ENDURO 50 ES SCUDERIA 2002-2019. The rear sprocket receives the engine’s power through the chain and turns the rear wheel. Its number of teeth sets the gearing: with more teeth the bike accelerates harder but has a lower top speed; with fewer teeth it is the other way round.

Why fit a new rear sprocket?

The benefits:

• New teeth that hold the chain properly and make it last.
• The number of teeth is chosen to suit the terrain: more teeth for slow, tight sections, fewer for fast tracks.
• Aluminium or steel: aluminium is lighter, steel lasts much longer; “mud-release” models have cut-outs that clear the dirt.

When should you replace the rear sprocket?

Pointed, hooked or uneven teeth, or a chain that lifts easily off the back of the sprocket: the chain kit needs replacing.

Specifications and fitting tips

• Color: Aluminum
• Chain pitch: 420
• Material: Aluminium
• Rear sprocket teeth count: 51
• Rear sprocket version: Standard
• High wear resistance
• Manufacturer part number: 4423 51 L

Cross-Mania tip: Replace the rear sprocket, front sprocket and chain together, tighten the sprocket bolts in a cross pattern with threadlocker and set the chain slack to the manual.

Also needed with this part

• Front sprocket : PBR · AFAM
• Drive chain : AFAM A420MX2-G · AFAM A420R1-G
• Chain lube : LIQUI MOLY 400 ml · LIQUI MOLY 250 ml

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
BETA RRT 50 2013
BETA RRT 50 2012
BETA RRT 50 2011
BETA RRT 50 2010
BETA RRT 50 2009
BETA RRT 50 2008
BETA RRT 50 2007
BETA RRT 50 2006
BETA RRT 50 2005
BETA RRT 50 2004
BETA RRT 50 2003
BETA RRT 50 2002
BETA RRT 50 ENDURO TRACK 2013
BETA RRT 50 ENDURO TRACK 2012
BETA RRT 50 ENDURO X-SERIES 2005
BETA RRT 50 ENDURO X-SERIES 2004
BETA RRT 50 MOTARD 2005
BETA RRT 50 MOTARD 2004
BETA RRT 50 MOTARD 2003
BETA RRT 50 MOTARD 2002
BETA RRT 50 MOTARD X-SERIES 2005
FANTIC ENDURO 50 2019
FANTIC ENDURO 50 2018
FANTIC ENDURO 50 2017
FANTIC ENDURO 50 2016
FANTIC ENDURO 50 2015
FANTIC ENDURO 50 E PERFORMANCE 2017
FANTIC ENDURO 50 ER COMPETIZIONE 2019
FANTIC ENDURO 50 ER COMPETIZIONE 2018
FANTIC ENDURO 50 ER COMPETIZIONE 2017
FANTIC ENDURO 50 ER COMPETIZIONE 2016
FANTIC ENDURO 50 ER COMPETIZIONE 2015
FANTIC ENDURO 50 ES SCUDERIA 2015