Feuling Parts Camchest — Race Series® — Reaper 521 — Water Cooled — M8

Requires high lift valve springs.

Includes:

• Race Series® High Volume Oil Pump

• High Flow Billet Camplate

• Reaper Series® 521 Camshaft

• Race Series® Sort Travel Lifters

• One Piece Pushrods

• Timken/Koyo Cam Bearing

• Rocker Arm Studs and Nuts

• Gaskets

• O-Rings

• ARP Cam/Crank Fasteners

• Washers

• Moly Lube

• Loctite

• Billet 7075 aluminum oil pump, which is 50% harder and stronger than the factory pump, holding tighter tolerances under temperature
• Short travel hydraulic lifters have 0.115" of total travel and will increase rpm by decreasing valve float and valve-train harmonics while maintaining a quiet engine
• Deeper scavenge kidney ports over the HP+ series for even more scavenge flow volume
• 30% more pressure gear volume over stock for M-Eight Twin-Cooled motors
• 53% more scavenge gear volume over stock for M-Eight Twin-Cooled motors
• 27% more pressure and scavenge gear volume over stock for M-Eight Oil-Cooled motors
• 42% more scavenge volume with port sizing, matched passages and holes to the engine case for M-Eight Twin-Cooled motors and M-Eight Oil-Cooled motors
• 68% more oil volume to the crankshaft and connecting rod bearing for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• 15°-25° cooler engine temperatures for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• 15°-30° cooler oil temperatures for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• 10-30 more psi of oil pressure for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• Increases oil pressure, scavenge volume and engine oil flow
• Reduces wet sumping, blowby and oily air cleaners
• Magnets in oil pump to help protect gears and pressure relief valve
• Test results show 2 hp gain and 2 ft/lb of TQ gain to the rear wheel on M-Eight
• Feuling test results show a 50% reduction of engine sump oil level
• Kit includes: Race Series® high volume oil pump, High Flow billet camplate, Reaper® Series camshaft, Race Series® short hydraulic roller lifters, one piece pushrods, Timken®/ Koyo® cam bearings, rocker arm studs/ nuts, gaskets, O-rings, ARP® cam/ crank fasteners, washers, moly paste and Loctite®
• Made in the USA
• Not for '23-'26 models with 121" VVT motor.

Exhaust Duration

243°

Exhaust Lift

0.521"

Intake Lift at TDC

0.162"

Model

Race Series®

Application

Intake, Exhaust

Features

Water Cooled

Exhaust Lift at TDC

0.125"

Exhaust Open

51.5°

Intake Close

34°

Intake Duration

231°

Units

Kit

Intake Lobe Centerline

98.5°

Intake Open

17°

Riding Style

Street

Intake Lift

0.518"

Type

Chain

Exhaust Close

11.5°

Exhaust Lobe Centerline

110°

Grind

521 Series

Shipping weight

11.5 lb

Package size

16 × 11 × 6 in

Country of origin

USA

Salto part #

0925-1414

Feuling Parts part #

7266ST

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

California: this part can’t ship to a California address.

Is it in stock?

Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.

How fast will it get to me?

Usually 2–4 business days by ground.

Will it fit my machine?

The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.

Is this genuine Feuling Parts?

Yes. It ships new from the same distributors the big online stores buy from — Feuling Parts part #7266ST.