NOTE: Vortex Ignitions has discontinued manufacturing their INTERCEPTOR line of piggy back fuel controllers to focus all their resources on manufacturing their standalone X10 ECU (Engine Controller Units). Regarding INTERCEPTOR references on DRI website. DRI would recommend using a Vortex X10 ECU in lieu of using the now discontinued Interceptor. Please call Duncan Racing Technical Support 619-258-6307 for more information.

450cc Kit (STD Bore) #EK-45NT-45 $2795.00
475cc Kit (Big Bore) #EK-45NT-47 $2895.00

Duncan Racing's Complete 435cc Engine Performance Package for the Suzuki LT-R450
Piston Options:
STD Bore (450cc) 12.8-1 Compression
Big Bore (473cc) 13-1 Compression •Cylinder Strip-Bore-Replate Required
•98mm is largest piston that can be safely put in stock cylinder and still be used with Nikasil plating. If larger piston is used cylinder flange/skirt will crack.
•It is unadvisable to install steel big bore sleeve in the Suzuki LT R450

Fuel:
Stock engines can run pump fuel, But engines with 12-1 compression and higher should run race fuel. 105-112 octane. V C-12 Fuel is an excellent choice.

Horse Power Gain:
450cc Kit + 16 HP, 475cc + 18 HP

Camshafts:
Motocross/Dune Riding
X34Grind Midrange/Top End Cam, Lift: .420"/.400", Duration 266°/268°
Baja/Cross Country
X12 Grind Bottom/Midrange Cam, Lift: .400"/.385", Duration 250°/254°

Valves:
Oversized S/S valves are included in both HP4 and National Kits. Valve size +1.0mm IN & EX

Air Cleaner:
DRI strongly recommend Pro Flow Air Cleaner kit with custom K&N Filter and outerwear. Run with air lid off.

EFI Recalibration:
DRI Recommends using the Vortex Interceptor (included in National Kit). Remapping is also available to existing Interceptors. Reprogram software is also available, call DRI for details. DRI does not offer technical assistance for any EFI remapping kits other than the Vortex Interceptor

Cores Required:
Customer must send in their Cylinder, Head Assy (with lifters), Camshafts. Camshafts supplied in HP4 and National Kits are Billet (no core required) but the OEM camshaft sprockets must be removed from stock camshafts and installed on the new billets. This process is very technical and requires a special fixture to properly index the sprockets.

Core Prices:
* Price to purchase new parts if no cores are sent into DRI for modification
Cam Cores (IN & EX) $381.00
Cylinder $525.00
Head $581.00
Valve Keepers $15.00


Delivery Time:
4-6 weeks