Skip to content
SHIPPING UPDATE: Due to high demand, orders are currently processing in 5-7 business days. Need it faster? Contact us to upgrade to expedited shipping! If you’ve found the item elsewhere or can’t wait, no problem—we completely understand. Just reach out to us, and we’ll cancel your order. Thanks for your patience and support! BRAPPPPPPPPPP!
SHIPPING UPDATE: Due to high demand, orders are currently processing in 5-7 business days. Need it faster? Contact us to upgrade to expedited shipping! If you’ve found the item elsewhere or can’t wait, no problem—we completely understand. Just reach out to us, and we’ll cancel your order. Thanks for your patience and support! BRAPPPPPPPPPP!
06+ TRX450R TRX 450R 520cc Big Bore Stroker Complete Motor Engine Rebuild Kit

06+ TRX450R TRX 450R 520cc Big Bore Stroker Complete Motor Engine Rebuild Kit

by BPRATV
Save 13% Save 13%
$1,499.99
$1,499.99 - $1,499.99
$1,499.99
$1,299.99
$1,299.99 - $1,299.99
$1,299.99

FITS ALL 2006 AND NEWER TRX450R AND TRX450ER MODELS!

  • 100mm after market DROP IN* cylinder
  • JE or CP forged piston**
  • Piston rings
  • Wristpin
  • Circlips
  • Hotrods +3mm stroker crank with rod assembled
  • Stud kit
  • Clutch kit (fibers, steels, springs)
  • Main bearings
  • Water pump bearing
  • Complete gasket kit
  • MLS big bore head gasket
  • Complete seal kit
  • Valve stem seals
  • Water pump mechanical seal
  • Cam chain
BPRATV - The Best Parts. The Best Performance. The Best Price.

BRAPPPPPPPPPP!
 More payment options

TOP SELLERS

Best 400EX valves springs head rebuild near me
Save 13% Save %
$149.99
$149.99 - $149.99
$149.99
$129.99
$129.99 - $129.99
$129.99

400EX 400X Head Redo Valves Intake Exhaust Valve Springs Rocker Arms Rebuild Kit

BPRATV

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS - THE ONLY TRULY COMPLETE REBUILD KIT ONLINE Steel intake and exhaust valves Inner and oute...

View full details
$149.99
$149.99 - $149.99
$149.99
$129.99
$129.99 - $129.99
$129.99
Save 13% Save %
Save 35% Save %
$461.99
$461.99 - $461.99
$461.99
$299.99
$299.99 - $299.99
$299.99

Honda 400EX Top End Rebuild Kit Wiseco 4606M08500 Stock Cylinder Assembly Parts

BPRATV

1043-2, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13...

View full details
$461.99
$461.99 - $461.99
$461.99
$299.99
$299.99 - $299.99
$299.99
Save 35% Save %
Save 24% Save %
$41.99
$41.99 - $41.99
$41.99
$31.99
$31.99 - $31.99
$31.99

Honda 400EX 400X XR400R Exhaust Studs Titanium Head Pipe Stud Upgrade Kit Set

BPRATV Talon Titanium

FITS ALL HONDA TRX400EX XR400R AND 400X MODELS AND YEARS Studs for all OEM and aftermarket exhaust systems All titanium stud and nut kit Made from ...

View full details
$41.99
$41.99 - $41.99
$41.99
$31.99
$31.99 - $31.99
$31.99
Save 24% Save %
Get best 400EX 88mm big bore hot cam near me
Save 40% Save %
$997.69
$997.69 - $997.69
$997.69
$599.98
$599.98 - $599.98
$599.98

Honda 400EX 400X 88mm +3 Big Bore Kit Stage 2 Cam 426cc Top End Rebuild 2 Hotcam

BPRATV

Works on all Honda 400EX, 400X, and XR400R models and years 88mm heavy-duty big bore cylinder 88mm big bore Wiseco or Wossner forged piston Nitrite...

View full details
$997.69
$997.69 - $997.69
$997.69
$599.98
$599.98 - $599.98
$599.98
Save 40% Save %
Save 24% Save %
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99

Honda TRX 400EX XR400R 87mm Big Bore Kit +2mm Cylinder 416cc Top End Rebuild Kit

BPRATV

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99
Save 24% Save %
Shop collection

Compare products

0 of 3 items selected

Select first item to compare

Select second item to compare

Select third item to compare

Compare