HP+ Camchest Kits / M8 Motors

Complete Feuling HP+ camchest kit for M8 motors, available in oil cooled and Twin Cooled configurations.

The M8 responds hard to a proper camchest, and Feuling packages the whole job under one part number. The HP+ kit carries the High Volume oil pump, High Flow billet camplate, your choice of 405, 465, or 472 Reaper cams, hydraulic roller lifters, and heavy duty .165" wall one-piece pushrods that reduce valvetrain harmonics while increasing valve lift. It runs the motor 15 to 35 degrees cooler with 15 to 30 more pounds of oil pressure, and it responds well to bolt-ons like slip-ons, a full exhaust, a high flow air cleaner, and added bore or compression.

Features

• Complete kit: Feuling High Volume oil pump, High Flow billet camplate, Reaper series camshaft, hydraulic roller lifters, fixed length pushrods, Timken/Koyo cam bearing, rocker arm studs and nuts, gaskets, O-rings, ARP cam and crank fasteners, washers, moly lube, and Loctite
• Heavy duty .165" wall one-piece pushrods reduce valvetrain harmonics and increase valve lift
• Engine temperatures run 15 to 35 degrees cooler
• Oil temperatures run 15 to 30 degrees cooler
• 15 to 30 more pounds of oil pressure
• Eliminates wet sumping, blowby, and oily air cleaners
• Responds well with slip-on mufflers, a full exhaust, and a high flow air cleaner
• Responds well with increased bore or compression
• Made in the U.S.A.

Note: Confirm whether your bike is Twin Cooled or oil cooled before purchase, then choose the matching variant.

Emissions: Drag Specialties lists these kits under different EMIS categories. What the emissions codes mean

• EMIS 1 for the Oil-Cooled options, 465 and 472. Drag lists these as exempt per CARB Executive Order #D-881-1 for '17-'24 Milwaukee-Eight models.
• EMIS 2 for the Twin Cooled options, 465 and 472.

Frequently Asked Questions

How do I know if I need oil cooled or Twin Cooled?
Twin Cooled M8 motors have liquid cooled cylinder heads with radiators in the lowers or fairing. Confirm your setup before ordering, and ⚠ VERIFY the correct configuration for your model.

Which cam should I choose?
The 405, 465, and 472 Reaper grinds move the powerband differently. See the Feuling cam listings for full specs and match the grind to your build goals.

What does the EMIS category mean for me?
It is Drag Specialties' emissions classification for the part. The Oil-Cooled options are listed under a CARB Executive Order, the Twin Cooled options under a different category. Our emissions information page explains what each category means, in the words of CARB, SEMA and Drag Specialties.