Temporarily Out of Stock

750cc NSC Cylinder Block Kit
for Triumph Trident & BSA Rocket 3 Motorcycles

Triples Rule Triumph Trident & BSA Rocket 3 Motorcycle Cylinder Block Kits


  • Sandcast Alloy 356 Aluminum
  • NSC electro-chemical plated cylinders
  • Better Heat Transfer From Piston To Block = Detonation Resistant Engine
  • Tighter Clearances = Better Sealing = More Power
  • Extra Thick Walls Around Base Flange - Resists Cracking & Distortion
  • Displacement 750cc, Block Furnished .020” Over Standard Bore
  • Kit Includes:
    • Block With New Alloy 7075 Tappet Guide Blocks Installed
    • Cast Pistons
    • Rings Made by Total Seal™
    • Wrist Pins & Circlips
  • For An Additional Charge, We Offer Total Seal™ "Gapless" 2nd Ring Technology Which Provides Superior Sealing, Raising Effective Compression & Providing More Manifold Vacuum.
    (Note: Raising manifold vacuum may result in mixture changes. Be prepared to re-jet carburetors. It is strongly recommended that a quality valve job be performed and Total Seal™ recommends the installation of positive style valve guide seals to prevent oil from possibly being drawn through the guides due to increased intake stroke efficiency.)
  • Block warranted against mechanical defect for 1 year
  • NiCom® warranted against failure for 1 year
  • See our About NSC page for more info

Block Kit with Guide Blocks, Pistons, Standard Rings, Pins, & Circlips: $1950.00
Kit with Total Seal™ Gapless Rings: $1,990.00

Shipping costs:

  • United States:
    • 2-3Days - $55.00 ea.
  • Canada:
    • 5-10 Days - $70.00 ea.
  • Europe & Pacific Rim:
    • 5-10 Days - $135.00 ea.

To Order Online Through PayPal (payment in US dollars only) click on the appropriate button below.
The item will come up with the appropriate shipping charges already included.

United States Canada Europe &
Pacific Rim
Block Kit
Block Kit with Total Seal™ Gapless Rings

To order by check or money order through the mail, or for any other questions, contact us

AHRMA Sportsman 750 racer #783