Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Triumph 650 750 Main Bearings
Franz and Grubb Engine

Triumph 650 750 Main Bearings

Regular price $54.95 $0.00
Shipping calculated at checkout.

Genuine English made bearings are the best choice for any Triumph rebuild. All of our bearings are in sealed factory packaging and should not be removed until ready for installation. For applications please see below.

Bearings are graded by numbers to designate the internal clearance.

Ball bearings generally are supplied in C3 condition, but roller bearings are supplied in CN (normal), C2 (less than normal), and C3 (more than normal) clearances. 

Main bearings used by year and model

engine Timing side Drive side
500 to 1954 70-1592 70-1591
650 to 1954 70-1592 70-1591
500 1955-57 70-1591 70-1591
650 1955-62 70-1591 70-1591
650 1963-65 70-1591 70-1591
650 1966-71 70-1591 70-2879
650 1972-73 70-3835 (metric) 70-2879
750 1973-76 70-3835 (metric) 70-2879
750 1977-80 70-3835 (metric) 70-2879 C2
Triumph Main bearing sizes
70-1591 ball bearing (RHP MJ1 1/8JC3) 
70-1591 ball bearing (Hepolite MJ1 1/8C3)
70-1592 ball bearing (RHP MJ1JC3)
70-2897 roller bearing (RHP MRJA1 1/8JCN)
70-2897 roller bearing (Hepolite MRJA1 1/8C3)
(70-2897 also interchanges BSA 68-0625)
70-3835 ball bearing (metric) 6306C3
(70-3835 also same as 60-4167)
70-2879 C2 roller bearing (RHP MRJA1 1/8JC2)

 

For any other bearing requirements please contact the shop.


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