Temporarily Out of Stock
855cc Big Bore Cylinder Block Kit
for Triumph Trident & BSA Rocket 3

867cc Big Bore Cylinder Block Kit


  • High Tensile Strength Sandcast Alloy 356 Aluminum

  • Extra Thick Walls Around Base Flange - Resists Cracking & Distortion

  • Head-bolt holes roll-form tapped for extra strong screw threads

  • Displacement 855cc

  • Optional additional 8 Tapped Head-Bolt Holes available

  • Centrifugally Cast Iron Sleeves by Advanced¬† Sleeve
  • Kit Includes:
    • Forged, CNC Machined Pistons with Rings, Wrist Pins, & Clips
    • Alloy 7075 Tappet Guide Blocks
    • Head Gasket
  • Block warranted against mechanical defect for 1 year

Cost: $2,500.00

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

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

Used on 2011 Isle of Man Manx GP Formula Classic Winner
2011 Isle of Man Manx GP Formula Classic Winner