WP APEX PRO 8500 Cartridge – KTM 990 RC R / Duke R

WP APEX PRO 8500 Cartridge

Upgrade the front-end feel of your KTM with the WP APEX PRO 8500 Cartridge, a premium street and track-focused suspension cartridge built for riders who want sharper feedback, improved stability, and more confidence on the road or at the track.

The APEX PRO 8500 is designed to bring WP's race-proven suspension performance to KTM 990 platforms with an optimized pressure-balanced setting, improved front-end control, and a smoother, more connected feel from the riding surface.

Technology

Closed Cartridge Technology

By compartmentalizing the damping system on Closed Cartridge forks, it is possible to reduce the oil volume. Pressure in the system helps prevent cavitation and ensures reliable damping performance in demanding track conditions.

Key Features

• Premium WP APEX PRO front suspension upgrade
• Closed Cartridge technology for consistent damping performance
• Pressurized damping system helps prevent cavitation
• Optimized pressure-balanced setting for improved traction and control
• Built-in rebound spring for added stability under braking and acceleration
• Improved front-end feedback and rider confidence
• Low-friction materials and coatings
• Weight reduction through state-of-the-art materials
• Adjustable compression and rebound damping
• Different spring-rate options available for rider setup
• Designed for demanding street and track conditions

Technical Details

• Adjuster: Adjustable compression / rebound damping
• Length: 30 in.
• Piston: 1.1 in.
• Part Number: A674C101Y702220

Fitment

• 2026 KTM 990 RC R
• 2026 KTM 990 RC R TRACK
• 2026 KTM 990 DUKE R

Fitment Note: Please verify fitment by VIN or with an authorized KTM/WP dealer before ordering. This part is not listed as a universal fitment item.