18023-87 "BLACK DIAMOND" HIGH PERFORMANCE STAINLESS STEEL VALVES BY PRECISION MACHINING
Fits: RS | Single | Sportster | Tube fram…
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Specifications
- Brand
- Kibblewhite Precision Machining Inc.
- Part Number
- 239302
- OEM Reference
- 18023-87
- Pack Quantity
- Each
- Category
- Valves
- VAT Rate
- 20%
About This Product
If you are working on a Sportster, Buell Tube Frame, XB, or RS model, these Black Diamond valves from Kibblewhite Precision Machining are a significant step up from stock. These one-piece stainless steel valves are machined with a specific profile to maximize flow and keep your engine breathing properly. The standout feature is the specialized impregnation process that penetrates the surface by .002 inches, creating a finish that is incredibly resistant to wear and friction. This treatment outperforms traditional hard chromium plating, ensuring your valvetrain stays tight even under high-performance conditions. Designed to replace OEM 18023-87, these lightweight valves are a favorite among mechanics for their superior resistance to corrosion and their ability to handle the higher temperatures found in performance-tuned engines.
Fitment
40 modelsRS | Single | Sportster | Tube frame | XB
Sportster 40 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2002–2015 | XL883R |
| Harley-Davidson | 2007 | 50th ANV SPORTSTER XL50 |
| Harley-Davidson | 2013–2017 | LIMITED B XL1200CB |
| Harley-Davidson | 2007–2012 | NIGHTSTER XL1200N |
| Harley-Davidson | 2026 | Nightster® RH975 |
| Harley-Davidson | 2026 | Nightster® Special RH975S |
| Harley-Davidson | 2012–2016 | SEVENTY-TWO XL1200V |
| Harley-Davidson | 1981–1985 | SPORTSTER XLS |
| Harley-Davidson | 1983–1984 | SPORTSTER XR-1000 |
| Harley-Davidson | 1983–1986 | SPORTSTER XLX |
| Harley-Davidson | 1986–1987 | SPORTSTER XLH 1100 |
| Harley-Davidson | 1981–1985 | Sportster 1100 (1987) CANH XLH1100 Sportster 1100 (1987) Sportster 1100 XLH1100 CANH |
| Harley-Davidson | 1988–1989 | SPORTSTER 1200 XLH1200 |
| Harley-Davidson | 1990–2003 | SPORTSTER 1200 XL1200 |
| Harley-Davidson | 1996–2020 | SPORTSTER 1200 CUSTOM XL1200C |
| Harley-Davidson | 2011–2016 | SPORTSTER 1200 CUSTOM (H-D1) XL1200CP |
| Harley-Davidson | 2008–2013 | SPORTSTER 1200 CUSTOM ANV XL1200C ANV |
| Harley-Davidson | 2013–2016 | SPORTSTER 1200 CUSTOM LIMITED A XL1200CA |
| Harley-Davidson | 2006–2011 | SPORTSTER 1200 LOW XL1200L |
| Harley-Davidson | 2008 | SPORTSTER 1200 LOW ANV XL1200L ANV |
| Harley-Davidson | 2016–2020 | SPORTSTER 1200 ROADSTER XL1200CX |
| Harley-Davidson | 1996–2003 | SPORTSTER 1200 SPORT XL1200S |
| Harley-Davidson | 2004–2009 | SPORTSTER 1200R XL1200R |
| Harley-Davidson | 1986–2009 | SPORTSTER 883 XL883 |
| Harley-Davidson | 1988–1989 | SPORTSTER 883 XLH883 |
| Harley-Davidson | 1998–2010 | SPORTSTER 883 CUSTOM XL883C |
| Harley-Davidson | 1988–1989 | SPORTSTER 883 DELUXE XLH883DLX |
| Harley-Davidson | 1990–1995 | SPORTSTER 883 DELUXE XL883DLX |
| Harley-Davidson | 1985–2003 | SPORTSTER 883 HUGGER XL883HUG |
| Harley-Davidson | 1988–1989 | SPORTSTER 883 HUGGER XLH883HUG |
| Harley-Davidson | 2018 | SPORTSTER FORTY-EIGHT ANNIVERSARY XL1200X ANX |
| Harley-Davidson | 2018–2020 | SPORTSTER FORTY-EIGHT SPECIAL XL1200XS |
| Harley-Davidson | 2018–2021 | SPORTSTER IRON 1200 XL1200NS |
| Harley-Davidson | 2005–2020 | SPORTSTER SUPERLOW XL883L |
| Harley-Davidson | 2014–2020 | SPORTSTER SUPERLOW 1200T XL1200T |
| Harley-Davidson | 2010–2022 | SPORTSTER XL FORTY-EIGHT XL1200X |
| Harley-Davidson | 2009–2022 | SPORTSTER XL IRON 883 XL883N |
| Harley-Davidson | 2026 | Sportster® S RH1250S |
| Harley-Davidson | 2007–2010 | XR1200 |
| Harley-Davidson | 2010–2013 | XR1200X |
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