Feuling High Load Beehive Valve Spring Kit

Unleash the full potential of your V-Twin engine with the Feuling High Load Beehive Valve Spring Kit. Engineered for extreme durability and optimal performance, this kit ensures your valvetrain can handle the demands of high-performance riding and large lift camshafts.

Description

The Feuling High Load Beehive Valve Spring Kit is meticulously machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, designed to withstand the most demanding V-Twin engine applications. Each spring undergoes a rigorous shot-peening process, combined with a specially processed thermal heat treat and a super NexTex® finish. This advanced treatment significantly enhances fatigue life, ensuring your engine performs reliably from stock configurations to high-performance setups.

Feuling's innovative Beehive design incorporates smaller, lighter weight retainers, which drastically reduce overall valve weight. This critical reduction promotes quicker engine revving and smoother valvetrain motion compared to traditional dual or single valve springs. The kit is engineered to eliminate valve spring separation, maximize stability, and effectively reduce valvetrain noise and harmonics, contributing to a more efficient and durable engine. These valve springs offer a direct bolt-in replacement for lifts up to 0.565", requiring no spring seat or rocker cover machining. While they can accommodate over 0.600" cam lift, this will necessitate spring seat pocket machining on the cylinder heads to achieve the correct open height. Designed to fit factory-style 6.00 mm valve stems with a triple groove, this kit is recommended for +0.540” lift camshafts and race-style engines.

Features & Highlights

• Advanced Material & Finish: Machined from premium Hi-tensile chrome silicon ovate wire, shot-peened, thermal heat treated, and finished with NexTex® for superior fatigue life in V-Twin engines.
• Optimized Beehive Design: Features smaller, lighter retainers that drastically reduce valve weight, promoting quicker engine revving and smoother valvetrain operation.
• Enhanced Valvetrain Stability: Engineered to eliminate valve spring separation, maximize stability, and significantly reduce valvetrain noise and harmonics for improved engine reliability.
• High Lift Compatibility: Provides a direct bolt-in solution for cam lifts up to 0.565" without machining, and can accommodate over 0.600" lift with minor cylinder head modifications.
• Comprehensive Kit: Includes a matched set of Feuling® High Load Beehive® valve springs, Ti retainers, machined spring seats, seat shims, valve locks, and premium Viton® valve seals with a spring-loaded valve stem wiper system.
• Precision Fitment: Designed for precise compatibility with factory-style 6.00 mm valve stems and triple groove setups.
• Made in the USA: Proudly manufactured in the USA, ensuring high-quality craftsmanship and materials.

Technical Specifications

• Type: Valve Spring Kit
• Model: High-Load Beehive
• Style: Ovate Wire Beehive
• Material: Hi-tensile Chrome Silicon
• Finish: Shot-peened, Thermal Heat Treat, NexTex®
• Valve Stem Compatibility: Factory style 6.00 mm, Triple Groove
• Installed Height / Seat Pressure:
  • 151 lb @ 1.475" (0.485" Lift)
  • 144 lb @ 1.498" (0.508" Lift)
  • 143 lb @ 1.501" (0.511" Lift)
  • 140 lb @ 1.511" (0.521" Lift)
  • 124 lb @ 1.562" (0.578" Lift)
  • 120 lb @ 1.582" (0.592" Lift)
• Open Height: 304 lb @ 0.990"
• Coil Bind: 0.945"
• Maximum Lift (Direct Bolt-in): 0.565"
• Maximum Lift (with machining): Over 0.600"
• Recommended Camshaft Lift: +0.540”
• Country of Origin: USA

Important to Know

• For cam lifts over 0.600", spring seat pocket machining on the cylinder heads is required to achieve the correct spring open height.
• Feuling® BeeHive® valve springs must be installed at the correct open height, matching the maximum lift to the open height specification of the valve springs.
• This kit is only recommended for large lift camshafts and race-style engines. Improper installation or setup can lead to extreme rocker arm deflection.
• No spring seat or rocker cover machining is required for cam lifts up to 0.565".

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