Skip to content
BPRATV will be closed for the Thanksgiving holiday. We will resume shipping orders on Monday, December 2nd. We are thankful for our amazing customers for making this one of our best years yet! Wishing you and your families a wonderful Thanksgiving! 🙏🦃
BPRATV will be closed for the Thanksgiving holiday. We will resume shipping orders on Monday, December 2nd. We are thankful for our amazing customers for making this one of our best years yet! Wishing you and your families a wonderful Thanksgiving!

Banshee 421 Athena 68 mil Big Bore Stroker Complete 4mm Motor Engine Rebuild Kit

by Athena
Save 15% Save 15%
Original price $2,699.99
Original price $2,699.99 - Original price $2,699.99
Original price $2,699.99
Current price $2,299.99
$2,299.99 - $2,299.99
Current price $2,299.99

S410485301023, S410485301024, P400485100024, 573M06800, 4111, CBK0044, PD300, 808812, 4001, CBK0039, WPC100, 9768M06800, 13077M06800, 822154, BR8ES, K018, 10-301, B1005, 21.2020, 8101D200, 2GU-11311-00-00, 2GU-11321-00-00,2GU-11181-00-00, 2GU-11631-00-94, 2GU-11610-01-00, 4L0-11633-00-00, 93450-17129-00, 93310-316D6-00,3GG-11351-02-00, B0627020F, B0627018AFM, B0627015F, 99530-10114-00, IR019018AFM, MNB160210225A, 8055681300989, 29L-11400-30-00 29L-11412-00-00 29L-11401-09-00, 29L-11442-10-00, 93306-30571-00, 93310-523D2-00, 90209-22257-00, 29L-11651-00-00, 93306-30549-00 93103-25108-00

THE MOST COMPLETE ATHENA 421 CHEATER KIT YOU WILL FIND!  SMOKE THOSE CUBS!  FITS ALL YAMAHA BANSHEE YEARS & MODELS!!

BPRATV Complete Banshee 421 Athena Big Bore Stroker Engine Rebuild Kit

THE BEST COMPONENTS FOR YOUR BANSHEE:

  • Athena 421cc 68mm big bore cylinders
  • Pro Design cool head with o-rings and head studs
  • 22cc domes machined for 4mm crankshaft
  • Hot Rods +4mm crank with 115 long connecting rods
  • Wiseco big bore forged piston set (Includes piston rings, wristpin, and circlips)
  • Hot Rods Wrist pin bearings
  • SKF Maxload and TZ outer crank bearings
  • Water pump bearing
  • Complete Transmission bearing kit
  • NGK spark plugs (Pair)
  • Dowel pins
  • Complete engine gasket kit
  • Complete engine seal kit
  • HI-FLOW Billet water pump impeller (Bigger Fins, Better Cooling)
  • TITANIUM Clutch Clutch Pusher with Ceramic Clutch Ball

1 year warranty for your peace of mind*

BANSHEES ARE OUR SPECIALTY AND WE STOCK MORE BANSHEE PARTS, INCLUDING CUB AND SUPER CUB CYLINDERS, THAN ANYONE ONLINE.  FROM VALUE KITS TO THE BEST THAT MONEY CAN BUY, WE ARE YOUR SOURCE FOR ALL THINGS BANSHEE!

BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare