C10220 EST top end gasket kit. M8 4.125" bore
Fits: 18-25 Softail; 17-25 FLT/Touring; 1…
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Specifications
- Brand
- Cometic
- Part Number
- C10220
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Derby Covers Seal Kits
- VAT Rate
- 20%
About This Product
This Cometic EST top end gasket kit is designed for custom Milwaukee-Eight builds using a 4.125" bore, typically found in high-performance 117" or 121" engines. The kit features .040" Multi-Layer Steel head gaskets and .020" Single-Layer Steel base and rocker cover gaskets with a Viton rubber coating. It is a complete rebuild solution, containing all the gaskets, seals, and o-rings needed to refresh the top end. This kit fits 2018 to 2025 Softail models and 2017 to 2025 Touring and Trike models. Engineered to work with both oil-cooled and water-cooled heads, it provides the professional-grade sealing required for large-displacement M8 engines, ensuring long-term reliability and performance.
Manufacturer part number: C10220.
Fitment
55 models18-25 Softail; 17-25 FLT/Touring; 17-25 Trikes. With custom 117"/121" 4.125" bore engines
Police 8 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2019–2020 | Electra Glide Standard Police FLHTP |
| Harley-Davidson | 2025 | Police Electra Glide FLHTP |
| Harley-Davidson | 2021–2024 | Police Electra Glide FLHTP |
| Harley-Davidson | 2025 | Police Road Glide FLTRXP |
| Harley-Davidson | 2024 | Police Road Glide FLTRXP |
| Harley-Davidson | 2025 | Police Road King FLHP |
| Harley-Davidson | 2021–2024 | Police Road King FLHP |
| Harley-Davidson | 2019–2020 | Road King Police FLHP |
Softail 21 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2018 | Breakout 114 Anniversary FXBRS |
| Harley-Davidson | 2018–2022 | Breakout 114 FXBRS |
| Harley-Davidson | 2023 | Breakout FXBR |
| Harley-Davidson | 2019 | Deluxe FLDE |
| Harley-Davidson | 2018–2021 | Fat Bob 114 FXFBS |
| Harley-Davidson | 2018–2020 | Fat Bob FXFB |
| Harley-Davidson | 2018 | Fat Boy 114 Anniversary FLFBS |
| Harley-Davidson | 2020 | Fat Boy 114 Anniversary FLFBSANV |
| Harley-Davidson | 2018–2024 | Fat Boy 114 FLFBS |
| Harley-Davidson | 2023 | Fat Boy Anniversary FLFBSANV |
| Harley-Davidson | 2020 | Fat Boy FLFB |
| Harley-Davidson | 2019 | FXDR 114 FXDRS |
| Harley-Davidson | 2018 | Heritage Classic 114 Anniversary FLHCS |
| Harley-Davidson | 2018–2024 | Heritage Classic 114 FLHCS |
| Harley-Davidson | 2023 | Heritage Classic Anniversary FLHCSANV |
| Harley-Davidson | 2020 | Heritage Classic FLHC |
| Harley-Davidson | 2024 | Hydra-Glide Revival FLI |
| Harley-Davidson | 2020–2021 | Low Rider S FXLRS |
| Harley-Davidson | 2019–2023 | Sport Glide FLSB |
| Harley-Davidson | 2021–2024 | Street Bob 114 FXBBS |
| Harley-Davidson | 2018 | Street Bob FXBB |
Touring 19 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2023 | Electra Glide Highway King FLHFB |
| Harley-Davidson | 2021 | Revival FLH |
| Harley-Davidson | 2023 | Road Glide Anniversary FLTRXSANV |
| Harley-Davidson | 2019–2022 | Road Glide FLTRX |
| Harley-Davidson | 2020–2024 | Road Glide Limited FLTRK |
| Harley-Davidson | 2019–2023 | Road Glide Special FLTRXS |
| Harley-Davidson | 2022 | Road Glide Special St FLTRXST |
| Harley-Davidson | 2023 | Road Glide St FLTRXST |
| Harley-Davidson | 2019 | Road Glide Ultra FLTRU |
| Harley-Davidson | 2025 | Road King Special FLHRXS |
| Harley-Davidson | 2019–2024 | Road King Special FLHRXS |
| Harley-Davidson | 2023 | Street Glide Anniversary FLHXSANV |
| Harley-Davidson | 2019–2023 | Street Glide Special FLHXS |
| Harley-Davidson | 2022 | Street Glide Special ST FLHXST |
| Harley-Davidson | 2023 | Street Glide ST FLHXST |
| Harley-Davidson | 2023 | Ultra Limited Anniversary FLHTKANV |
| Harley-Davidson | 2019–2024 | Ultra Limited FLHTK |
| Harley-Davidson | 2019 | Ultra Limited Low FLHTKL |
| Harley-Davidson | 2019–2023 | Ultra Limited Shrine Edition FLHTK |
Trike 7 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2025 | Freewheeler FLRT |
| Harley-Davidson | 2019–2024 | Freewheeler FLRT |
| Harley-Davidson | 2025 | Road Glide 3 FLTRT |
| Harley-Davidson | 2023–2024 | Road Glide 3 FLTRT |
| Harley-Davidson | 2025 | Tri Glide ULTRA FLHTCUTG |
| Harley-Davidson | 2023 | Tri Glide Ultra Anniversary FLHTCUTGANV |
| Harley-Davidson | 2019–2024 | Tri Glide Ultra FLHTCUTG |
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