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Provide your Triumph’s crankshaft with the highest level of protection. These King Tri-Metal big end (connecting rod) bearings are specifically designed for high-performance and competition engines where standard bearings simply won't suffice.

Product Specs

• Part Number: B4331SA
• Brand: King Engine Bearings
• Material: Tri-Metal for enhanced durability and heat resistance
• Compatibility: Triumph TR2, TR3, TR3A, TR4, and TR4A
• Sizes Available: Standard, +0.010", +0.020", +0.030", +0.040"

Why Choose King Tri-Metal?

• Heavy-Duty Construction: Built to survive the increased stresses of high-compression heads and high-lift camshafts.
• Exceptional Fatigue Strength: The layered tri-metal design offers superior resistance to "flaking" or "cracking" under racing loads.
  
• Crankshaft Protection: Excellent embeddability ensures that any stray particles are trapped safely within the bearing liner rather than scoring the crank.
  
• The Engine Builder's Choice: King's manufacturing consistency delivers reliable oil pressure and perfect clearances across all journals.
  

Note: Please select your required undersize from the dropdown menu above

[Big end bearings for Triumph TR2 to TR4A. Made by King. Tri-Metal.]

[Please select which size from the options above.]

[B4331SA]