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HPd® 29940 Hwy 169 NW, Princeton, MN 55371
Ph: 763-389-3336
Fax: 763-389-1474
 

BILLET HEADS -

Billet Head, Cover & O-Rings

A must have for the Polaris racers and performance riders.

Our billet, 2 piece head, is a complete design, and not just a machined copy of the original stocker. It provides concentric water flow, thus preventing hot spots. Sealed to the cylinder with O-rings to create a metal to metal contact, providing even engine temperatures. The improved combustion chamber pocket and squish area, increases horsepower and torque. Additionally, the head allows girdling through the cylinder to the crankcase, providing a much stronger and durable package.

Girdle kit is optional. Not for use on 416 PowerMAXX.

Trail Mod 400s
Designed for stock, piped or trail mod 400s on 92 octane fuel. Improved torque and horsepower.

PART # BHPG12
• LIST $250.00
Qty:

 
Trail Mod 400s
Big bore head for 86.5mm to 87.5mm bore for use with trail mod engines on 92 octane. 

PART # BHBBPG
• LIST $250.00
Qty:

Trail or Race Ported 400s
Big bore head for 108 octane race gas on trail or race ported engines. Best horsepower.

PART # BHBBRG
• LIST $250.00
Qty:

Replacement Chambers for Billet Heads

Often copied but never duplicated.

 ChamberType: Pump Gas 400
Gas Type: 92 Octane/Pump 

PART # BHCH12
• LIST $90.00
Qty:

ChamberType: Big Bore PG
Gas Type: 92 Octane/Pump 

PART # BHCHBBPG
• LIST $90.00
Qty:

ChamberType: Big Bore RG
Gas Type: 108 Octane/Race 

PART # BHCHBBRG
• LIST $90.00
Qty:

Replacement Billet
Head O-Ring Kit

HPD 416 Billet Head
PART # ORK416
• LIST $16.00
Qty:

HPD Big Bore Billet Head
PART # ORKB
• LIST $16.00
Qty:

HPD Billet Head
PART # ORK
• LIST $16.00
Qty:

Billet Head Girdle Kit

For Polaris 400 cyl. only (not for use on 416 POWER MAXX products).

PART # BHGDL
• LIST $50.00
Qty:

Drill Cylinder
for Girdle Kit

For Polaris 400 cyl. only (not for use on 416 POWER MAXX products). Send in Cylinder to HPD for modification.

PART # DFG
• LIST $40.00
Qty:

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