• Will this lens fit my 1965 Harley-Davidson Big Twin?

  Yes, the MCS Replacement Lens is designed for all Big Twin models from 1955 to 1972. It will fit both chrome (519380) and black (519458) OEM taillight housings used during this period. Make sure your current housing is one of these two models before purchasing.

• What is the difference between fitment for Big Twin and XL Sportster (NU)?

  This lens is compatible with both 1955-1972 Big Twin engines and XL Sportster models (NU designation). The NU suffix indicates newer Sportster variants within this timeframe. Both applications use the same OEM-style taillight housing, making this lens a universal fit for these platforms.

• Is this a direct replacement for OEM part number 68090-69?

  Yes, the MCS Replacement Lens carries OEM reference number 68090-69 and is designed as a direct replacement for original Harley-Davidson taillight lenses. It maintains the same dimensions and fitment as the factory original while offering quality construction at a competitive price.

• What kind of bulb does this taillight lens accommodate?

  This is a lens-only replacement. It fits standard incandescent bulbs used in OEM Harley-Davidson taillights from the 1955-1972 era, typically 12V filament bulbs. Ensure you have the correct bulb installed in your housing before installing this lens.

• Can I use this red lens on a black housing taillight?

  Absolutely. The MCS Replacement Lens is designed to fit both the chrome 519380 and black 519458 OEM taillight housings. The housing color does not affect compatibility—only the overall dimensions matter. A red lens on a black housing creates a classic, distinctive look popular among cafe racer builds.

• Is installation difficult? Do I need special tools?

  Installation is straightforward. Simply remove your old lens from the taillight housing and snap the new MCS lens into place. No special tools are required—most installations take just a few minutes. Refer to your motorcycle's service manual for detailed removal and installation procedures specific to your model.

• Will this lens work on my cafe racer project with a 1970 Harley engine?

  Yes, this is an excellent choice for cafe racer projects using 1970 Harley-Davidson engines. The classic red lens design pairs perfectly with vintage-inspired builds and maintains authentic OEM styling. Verify that your taillight housing is either model 519380 or 519458 for guaranteed compatibility.

• Is the MCS lens made to the same quality standards as the original?

  MCS (Motor City Speed) is a reputable manufacturer of motorcycle parts with a strong focus on quality and authenticity. While replacement lenses may have slight variations from 50+ year-old originals, MCS parts are engineered to meet or exceed OEM specifications and are trusted by builders and restorers worldwide.

More questions? View all FAQs