EPICA Cartridge Kit – WP XPLOR 48mm Spring Conversion
Original price was: $1,980.00.$1,650.00Current price is: $1,650.00.
Our Premium Epica Cartridge Kit Is Made To Order – Avg Lead Time Is 2 Weeks From Order Placement.
EPICA closed cartridge spring conversion for WP XPLOR 48mm forks. Improves damping consistency, control, comfort, and front-end stability.
1 in stock (can be backordered)
The EPICA Cartridge Kit for WP XPLOR 48mm forks transforms the performance of the OEM split-function fork system found on KTM, Husqvarna, and GASGAS off-road models. Designed and manufactured in Italy, the EPICA system replaces the limitations of the stock XPLOR damping design with a true high-performance closed cartridge platform.
As a result, riders gain improved front-end control, better chassis stability, and increased damping consistency across technical terrain, enduro riding, dual-sport applications, and aggressive off-road conditions.
The EPICA system improves hold-up under braking while also increasing mid-stroke support and bottoming resistance. In addition, the fork maintains comfort and traction without sacrificing steering precision or rider confidence.
Technology Overview
Unlike the OEM split-function design, the EPICA WP XPLOR Cartridge System delivers balanced damping control through both fork legs. Furthermore, the closed cartridge architecture improves oil management, damping stability, and overall suspension consistency during long rides and demanding terrain.
The system uses precision CNC-machined internal components combined with advanced damping technology. Consequently, riders experience a more planted and controlled feel while reducing harshness and unwanted deflection.
Additionally, the cartridge design improves traction across rocks, roots, braking bumps, chop, and high-speed terrain. This allows the motorcycle to remain more predictable and connected to the ground.
Performance Benefits
- Improved front-end stability and chassis control
- Increased mid-stroke support and hold-up
- Enhanced damping consistency during long rides
- Reduced harshness in technical terrain
- Improved bottoming resistance on larger impacts
- More connected and predictable steering feel
- Better traction across rocks, roots, and chop
- Increased rider confidence in changing terrain conditions
- Balanced damping performance through both fork legs
- Precision manufactured in Italy using premium components
Riding Applications
- Enduro riding
- Technical single track
- Dual-sport riding
- Cross-country racing
- Desert and off-road riding
- Adventure-style off-road applications
- Vet and amateur racing
- Professional off-road competition
KTM EXC 125 2017-2023
KTM EXC 150/250/300 2017-2023
KTM EXC-F 250/350/450/500 2017-2023
KTM EXC TPI Six Days 250/250F/350F/450F/500F 2017-2023
HUSQVARNA FE 250/350/450/501 2018-2023
HUSQVARNA TE 150/250/300 2018-2023
GAS GAS EC 125/250/300 2021-2026
GAS GAS EC-F 250/350/450 2021-2026
Bladder System
– Bladder system prevents performance loss that can occur with standard internal spring systems (due to hydraulic support decay).
Internal oil compensation with increased volume for better high speed response.
Ability to tune bladder pressures via the side bleed spring.
EPICA cartridge incorporates Lainer’s Progressive Damping System (PDS) for increased hydraulic damping at the end stroke.
– PDS system has up to 12 different adjustments for the end stroke stiffness.
High Speed compression piston is reversible with a large range of settings.
– Machined from premium 7075 and 6060 alloys and hard anodized.
– Reversible High Speed compression piston outer diameter = 38 mm.
– Side A (Flat valve surface) 34mm OD shims for motocross and enduro.
– Side B (Convex valve surface) 32mm OD shims for supercross
Option to configure Low Speed Valve (LSV) on compression base valve.
Cartridge rod diameter = 14 mm (for an increased oil flow).
Rebound piston diameter = 25mm for better hydraulic control.
Compression high/low speed shims ID 12 mm.
Maximum travel = 310 mm.
Maximum shim diameter for Mid-Valve By-pass = 21 mm.
Ability to set Mid-Valve float clearance with the stack shims.
Mid-Valve/By-pass floating shim ID = 6 mm (for a soft response at high speed on the braking bumps).
Rebound shims ID = 6 mm (uses delta mid-valve shims to avoid any oil turbulence on compression).
Low friction NBR bottom seal.
Ability to extend the cartridge through the nylon washers.
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