Fit System K Source 10" Universal Interior Rear View Mirror — Day/Night Flip, Shatter-Resistant

Replace a worn or small factory mirror with the K Source DN100 to gain a larger, clearer view behind your vehicle and an easy-to-use anti-glare setting for night driving. Built by Fit System’s K Source division, this mirror balances a wide reflective surface with reinforced glass and a design intended to fit most OEM interior bases. Installation is straightforward, and the manual flip lever gives you immediate control over glare without electronics.

How does this mirror reduce glare on nighttime drives?

The DN100 uses a traditional manual day/night prism and flip lever to change the mirror angle, lowering reflected headlight glare from following vehicles. This mechanical solution doesn’t rely on power or sensors, so it reacts instantly and works every time you flip the switch. Because the glass is shatter-resistant, it also maintains a clear surface under real-world conditions.

• Manual flip lever toggles between day and night angles
• Prismatic glass reduces brightness from rear headlights
• Passive system—no wiring or electronic components required

Will the DN100 fit my car’s existing mirror base?

The mirror is designed as a universal replacement that fits most factory interior rear-view bases, making it a simple upgrade for many vehicles. It mounts to standard mirror brackets and allows for full angle adjustment after installation. If your vehicle uses an uncommon mounting system, you may need an adapter, but most common OEM mounts are compatible.

• Fits most factory interior rear-view bases
• Mounts to standard mirror brackets without major modification
• Fully adjustable orientation for proper sightlines

What safety and durability features does the mirror include?

The DN100 uses shatter-resistant glass to help preserve the reflective surface after impacts or vibrations, improving long-term durability. The reinforced mirror substrate and secure mounting reduce the chance of loosening over time. The simple, robust construction emphasizes reliability for everyday driving conditions.

• Shatter-resistant glass for impact protection
• Sturdy housing and secure mounting to resist vibration
• Quality control from a specialty mirror manufacturer

How easy is installation and angle adjustment once installed?

Installation is intentionally straightforward: the DN100 replaces most factory mirrors by sliding or bolting into the existing base, so no professional tools are usually necessary. After mounting, the head tilts and swivels to fine-tune your rearward view, providing a wide 10-inch reflective surface that helps reduce blind spots. The manual flip switch sits within easy reach for quick day/night changes.

• Quick replacement with most OEM mounting bases
• Tool-free angle adjustments after installation
• Large 10" glass improves rear visibility coverage

Who is this for: The K Source DN100 is well suited to drivers who want a low-maintenance, larger interior mirror with a reliable anti-glare option—ideal for commuters, rideshare drivers, families and anyone upgrading an older or damaged factory mirror. If you prefer a simple mechanical solution over sensor-driven auto-dimming systems and need wide rear visibility that installs quickly, the DN100 is a practical choice.