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$559.95
- M-Eight High-Load springs are machined from a premium grade hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treat and super NexTex® finish to give these valve springs the needed fatigue life to exceed the high demands of V-Twin engines from stock to performance
- Valve springs are a direct bolt-in replacement, no spring seat or rocker cover machining required up to .565" lift
- Springs will accommodate over .600 cam lift, but will require spring seat pocket machining on the cylinder heads to set correct spring open height
- Smaller lighter weight retainers which drastically reduce the valve weight creating a quicker revving and smoother motion than comparable dual or single valve springs
- Eliminate valve spring separation, maximize stability, reduce valve-train noise and harmonics
- Packaged as a matched set and must be installed at the correct OPEN HEIGHT
- Matching max cam lift to the open height spec of the valve springs is essential for optimal valve-train operation and spring life (see included spring spec chart)
- Kit includes: matched set of Feuling® High-Load BeeHive® valve springs, Titanium retainers, machined spring seats, seat shims, valve locks and a set of premium Viton® valve seals equipped with a spring-loaded valve stem wiper system
- Bolt in up to 565 lift for M-Eight
- Fit up to .600" lift
- M-Eight specs: seat lbs./installed height; 151 lbs. at 1.475" (.485" lift), 144 lbs. at 1.498" (.508" lift), 143 lbs. at 1.501" (.511" lift), 140 lbs. at 1.511" (.521" lift), 124 lbs. at 1.562" (.578" lift), 120 lbs. at 1.582" (.592" lift), 304 lbs at .990" open height, coil bind at .945" (cam specs measured on the lifter at .050" lift with 1.61 rocker arm ratio)
- Recommended for .540"+ lift camshafts
NOTE: These springs are ONLY recommended for large lift camshafts like Reaper® 592 Cam PART #0925-1265 and RACE style engines as these valve springs have increased load and if used on smaller cams will create extreme rocker arm deflection.
SPECIFICATIONS
| Model | High-Load Beehive |
| Product Name | Spring Kit |
| Riding Style | Street |
| Style | Ovate Wire Beehive |
| Type | Valve |
| Units | Kit |
FITS THE FOLLOWING MODELS
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| 2018-2021 | Harley-Davidson | Softail Sport Glide FLSB |
| 2018-2023 | Harley-Davidson | Softail Fat Bob 114 FXFBS |
| 2018-2024 | Harley-Davidson | Softail Street Bob FXBB |
| 2018-2024 | Harley-Davidson | Softail Fat Boy 114 FLFBS |
| 2018-2024 | Harley-Davidson | Softail Heritage Classic 114 FLHCS |
| 2018-2024 | Harley-Davidson | CVO Road Glide Custom FLTRXSE |
| 2019-2020 | Harley-Davidson | FXDR 114 |
| 2019-2022 | Harley-Davidson | Electra Glide Standard EFI FLHTI |
| 2020 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE |
| 2020-2024 | Harley-Davidson | Softail Low Rider S FXLRS |
| 2020-2024 | Harley-Davidson | Road Glide Limited FLTRK |
| 2020-2024 | Harley-Davidson | Softail Standard FXST |
| 2021 | Harley-Davidson | Electra Glide Revival |
| 2022 | Harley-Davidson | Softail Low Rider El Diablo FXRST |
| 2022-2023 | Harley-Davidson | CVO Road Glide Limited |
| 2022-2023 | Harley-Davidson | Street Glide ST FLHXST |
| 2022-2023 | Harley-Davidson | Road Glide ST FLTRXST |
| 2022-2024 | Harley-Davidson | Softail Low Rider ST FXLRST |
| 2023 | Harley-Davidson | Electra Glide Highway King FLHFB |
| 2024 | Harley-Davidson | CVO Road Glide ST FLTRXSTSE |
| 2024 | Harley-Davidson | Hydra-Glide Revival |
| 2024 | Harley-Davidson | Road Glide Police FLTRXP |
