Feuling tappet set, Race Series. Short stroke. OD +.001"

Includes 0.115" stroke.
Oversized diameter (0.843" - 0.8435"), standard size is 0.8420" to 0.8423" OD.
Revolutionary new design with 0.115" total travel compared to a full-travel lifter with 0.200". These hydraulic lifters increase RPM by reducing valve float and valve train harmonics, whilst keeping the engine quiet. The reduced travel decreases the amount of oil needed to fill the inside of the lifter, reducing oil aeration inside the lifter on high-lift, fast-acting cams.
NOTE: when there is oil aeration inside the lifter, the pushrod seat drops when the lifter rolls over the front ramp of the cam after compressing the air, thus creating a noisy, low-performance lifter.
Feuling short travel lifters must be set with 0.065" - 0.070" preload and, with normal engine heat growth, the operating preload of the lifter will be at or around half travel.
Machined from a steel body and designed to exceed the demands of high-lift cams and higher valve spring pressures, with a slower bleed rate. The RACE series lifters maintain proper oil flow to the top end, increase engine RPM, valve train stability, reduce valve float and promote maximum valve lift.
Feuling recommends the Race series lifters for engines with a valve spring seat pressure above 185 lbs. FEULING recommends using a high-volume oil pump, which will result in quieter, better-performing lifters. The Race series lifters are compatible with FEULING HP+ or Race series oil pumps and are designed for use in street and track engines. Developed on the Spin-Tron dynamometer and track tested, made in the USA.
• Improved performance.
• Quieter engine.
• Standard replacement through to drag racing.
• Set FEULING SHORT TRAVEL tappets with 0.065" – 0.070" tappet preload.
• Precision ground needle bearings with high chrome steel axle for long service life and minimal friction.
• Extra long cold forged, precision ground and fitted plunger for controlled bleeding and pumping.
• High-flow, fast-responding disc check valve for improved high-RPM response.
• Available in oversize diameters – Cylinder protectors. The ideal side clearance is 0.001".
• Recommended for both race tracks and high performance street engines.
• Sold in sets of 4.
• Manufactured in the USA
*FEULING RECOMMENDS HAND-PUMPING EACH LIFTER BEFORE INSTALLATION TO REMOVE ALL AIR AND PROVIDE A FULLY PUMPED-UP LIFTER. USING LOW-VISCOSITY OIL SUCH AS ATF IN A SPRAY BOTTLE WORKS WELL.
See the Feuling 588060 tool to check the tappet bore diameters.


Specifications


Brand
Feuling


Application
99-17 (NU) Twin Cam; 17-26 M8; 00-22 (NU) XL; 08-12 (NU) XR1200; 00-10 (NU) Buell XB


Sales unit
Kit


Packaging weight
0.564 kg


HS Code
84099100


Motorcycle family
DYNA, SOFTAIL, SPORTSTER, TOURING, TRIKE


Original name
Feuling, Race Series tappet set. Short travel. +.001" OD