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PROFESSIONAL RS PROFESSIONAL RX

Constantly technically updated to ensure the highest standard of strength and wear resistance required in any application.

All Professional chains use extended curl-formed bushings, shot-peened solid rollers and steel plates for increased fatigue resistance. Pre-stretched. ”Gold” outer plates except for 520 EBXL.

415 RS and 420 RS chains, directly deriving from racing fields experience, are ideal for high performance 50cc road bikes.

  
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The 420 RX3 chain features linkplates that, even though have a reduced thickness, have a completely redesigned profile that ensures increased strength. It also has type “X” chromized pins in high carbon alloy steel, that makes it particularly strong and suitable for off-road applications.

428 RX3 and 520 RX3 chains: featuring the special “X” chromized pins and linkplates with special bevel that provides sure engagement with the sprockets even in the most difficult conditions, such as in off-road use.

RS and RS3 chains, with carburized alloy steel pins, are suitable for high performances street bikes.

520 EBXL chain, light and strong thanks to the reduced thickness of the alloy steel linkplates and to the special “X” type chromized pins, is the chain that is used by the premium manufacturers of trials motorcycles.

CHAIN
 Pitch Inner width Roller dia. Plate thickness Pin length Weight Average tensile strength
Outer Inner
Int. N°
 Regina N° mm Inch mm Inch mm mm mm mm Kg/m Kg/100
Links		 Lbs/100
Links		 N Lbs
415
 90 RS 12,70
 1/2
 4,77 3/16 7,75 1,6 1,6 14,8 0,56 0,71 1,57 19000
 4271
420
 124 RS 12,70 1/2
 6,35 1/4 7,75 1,6 1,6 16,3 0,64 0,81 1,79 19000 4271
420 124 RX3 12,70 1/2
 6,35 1/4 7,75 1,6 1,6 16,3 0,64 0,81 1,79 21000 4271
428 126 RS3 12,70 1/2
 7,75 5/16 8,51 1,8 1,8 18,5 0,81 1,03 2,27 21000 4271
428 126 RX3 12,70 1/2
 7,75 5/16 8,51 1,8 1,8 18,5 0,81 1,03 2,27 20500 4609
520 135 EBXL 15,875 5/8 6,35 1/4 10,16 1,6 1,6 16,6 0,81 1,29 2,83 26900 6047
520 135 RS3 15,875 5/8 6,35 1/4 10,16 2,0 2,0 18,1 0,97 1,54 3,39 33000 7419
520 135 RX3 15,875 5/8 6,35 1/4 10,16 2,0 2,0 18,1 0,97 1,54 3,39 34000 7644
530 136 RS 15,875 5/8 9,53 3/8 10,16 2,2 2,2 22,0 1,14 1,81 3,99 33400 7509
525 137 RS 15,875 5/8 7,95 5/16 10,16 2,0 2,0 19,6 1,02 1,62 3,57 31400 7059
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