Duncan Racing's Complete 435cc Engine Performance Package for the LTZ/KFX 400

UNFORTUNATLEY THIS KIT IS NO LONGER AVAILABLE IN COMPLETE FORM.
Carburetor and Exhaust have been discontinued.

DR HP4 Head builds are still available * see HP4 Valva Train Section.
Various Pistons options are also available.

Call DR for additional information #619.258.6306

*Due to the many engine kit options and configurations, we recommend calling to speak with a member of our staff for an accurate quote.

Includes:
Fat Boy 4 Complete Exhaust System, 435 Piston kit, Cylinder Bore and ReNikasil, Steel headgasket Camshafts, HD Valve Springs w/Titanium Retainers, Shortened Bronze Guides, DR Head Porting (with guides out) 3-Angle Valve Job, Instructions, DR Tech Support.

*Price plus any necessary parts. Example: Guide Seals, Valves, Gaskets, etc. is additional cost.

Power Curve Camshaft Profile Options:
Midrange Camshafts # 327-X94
Top End Camshafts # 327-X510

Porting: Flow Tested Design done in house by DRI Technicians. Intake Manifold Matched

Compression: 12-1

Cores Required:
Cylinder, Head, Camshafts, and Intake Manifold. Customer must send in their cylinder to DRI for porting modification or purchase new.
**For more Engine Kit options check the Buyers Guide section**