S&S 4.375" M8 Stroke Flywheel w/Full Width Rods & Balancer Gear (320-0604)
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S&S 4.375" M8 Stroke Flywheel w/Full Width Rods & Balancer Gear (320-0604)
$1,999.95
$1,626.67
(You save
$373.28
)
- The flywheels are the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of
- 4-3/8" Stroke (107 or 124ci)
- Balance Gear installed
- Heat Treated 4140 Material is harder & more than twice as strong as stock
- Stronger assembly eliminates need to weld crankpin
- Capable of higher RPM - More available power!
- S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!
- Full width wristpin connecting rods (requires S&S Performance Pistons)
- Balanced for S&S Performance piston weight (1213g)
- Perfect for Gear Drive Cams
- Consistent balance & precision machining
- Capable of higher RPM - More available power!
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2018-2019 | Harley-Davidson | Breakout FXBR 107 | |
| 2018-2020 | Harley-Davidson | Deluxe FLDE 107 | |
| 2019-2022 | Harley-Davidson | Electra Glide Standard FLHT | |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2018-2019 | Harley-Davidson | Fat Bob FXFB 107 | |
| 2018-2019 | Harley-Davidson | Fat Boy FLFB 107 | |
| 2017-2018 | Harley-Davidson | Freewheeler FLRT | |
| 2018-2021 | Harley-Davidson | Heritage Classic FLHC 107 | |
| 2018-2020 | Harley-Davidson | Low Rider FXLR 107 | |
| 2017-2023 | Harley-Davidson | Road Glide FLTRX | |
| 2017-2018 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2017-2018 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2017-2022 | Harley-Davidson | Road King FLHR | |
| 2017-2018 | Harley-Davidson | Road King Special FLHRXS | |
| 2018-2021 | Harley-Davidson | Softail Slim FLSL 107 | |
| 2020-2023 | Harley-Davidson | Softail Standard FXST 107 | |
| 2018-2021 | Harley-Davidson | Sport Glide FLSB 107 | |
| 2018-2020 | Harley-Davidson | Street Bob FXBB 107 | |
| 2017-2023 | Harley-Davidson | Street Glide FLHX | |
| 2017-2018 | Harley-Davidson | Street Glide Special FLHXS | |
| 2017-2018 | Harley-Davidson | Tri Glide Ultra FLHTCUTG | |
| 2017-2018 | Harley-Davidson | Ultra Limited FLHTK | |
| 2017-2018 | Harley-Davidson | Ultra Limited Low FLHTKL | |