Performance Engine, Bad Ass Minis 500cc Big Block Longblock Racing Engine

Regular price$1,895.00
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Shipping calculated at checkout.
Bad Ass Minis performance go kart and minibike performance engine for competition use.  This big block performance engine consists of the following components:
  • Custom tall deck cylinder block
  • Balanced stroker crankshaft
  • Custom lightweight low drag forged piston kit
  • Billet aluminum 7075 T-6 connecting rod with ARP rod bolts
  • Custom camshaft profile
  • Custom ARP side cover bolts and head bolts
  • Chrome moly pushrods
  • Big valve, ported, flowed and milled cylinder head 
  • Stainless steel intake and exhaust valves with hardened tips and nitrided stems
  • Dual valve spring kit
  • Titanium valve spring retainers and automotive style bead valve locks
  • Full roller rocker arm kit
  • Engine will be ran on our chassis dyno with all vital measurements taken for quality control
Cylinder Head, GX390 Predator 420cc Big Valve, Ported, Milled and Assembled Performance Head

Cylinder Head, GX390 Predator 420cc Big Valve, Ported, Milled and Assembled Performance Head

Regular price$325.00
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Shipping calculated at checkout.
Bad Ass Minis big valve Honda GX390 aftermarket performance cylinder head.  Includes cylinder head, big valve seats installed, multi-angle valve job, ported, milled, flow tested and assembled with stainless steel valves, titanium valve spring retainers, automotive bead style valve locks and dual valve spring package.
Predator 670cc Header Kit Universal Build Your Own Header Kit

Predator 670cc Header Kit Universal Build Your Own Header Kit

Regular price$124.95
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Shipping calculated at checkout.

Our build your own header kit fits the Predator 670cc V-Twin engine from Harbor Freight.  Our header kit comes with the following components:

  • 2 - Header flanges TIG welded to header stubs
  • 1 - Straight header tube
  • 1 - 180 degree header tube
  • 4 - 90 degree header tubes

You will be able to configure your custom setup for your application.  Our header tubes are 1 1/4" OD.