48mm EPICA FRP Closed Cartridge Kit – KYB Fork Upgrade
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.
Premium free piston cartridge upgrade for KYB 48mm forks. Improves front-end control, damping consistency, and hydraulic performance.
Available on backorder
The EPICA FRP Closed Cartridge Kit gives riders better front-end control, improved damping consistency, and a more connected feel on the track. The system upgrades the stock KYB fork into a premium closed cartridge design focused on stability, comfort, and hydraulic control.
The EPICA system performs in motocross, supercross, off-road racing, GP terrain, and aggressive recreational riding. It improves braking stability, cornering confidence, bump absorption, and consistency during long motos or rough conditions.
Unlike a traditional open cartridge fork, the EPICA closed cartridge system utilizes a dedicated damping chamber designed to deliver a more controlled and consistent hydraulic feel. The latest FRP version now incorporates a Free Piston pressure management system focused on maintaining predictable damping characteristics during aggressive riding conditions.
As a result, the fork maintains a more predictable and controlled feel throughout the ride.
Technology Overview
The EPICA KYB 48mm Cartridge Kit uses a high-performance closed cartridge design to improve damping precision and hydraulic consistency. The system increases support during aggressive riding while maintaining comfort and traction on rough terrain.
The updated FRP architecture replaces the previous bladder-style compensation system with a Free Piston design engineered to support stable and predictable damping performance during repeated impacts and demanding riding conditions.
In addition, the cartridge design improves oil flow control through precision-machined internal components and refined hydraulic management. This creates a more planted front-end feel and improves rider confidence during braking and corner entry.
The closed cartridge structure promotes more consistent hydraulic control throughout long motos and demanding riding conditions.
Performance Benefits
- Improved front-end hold-up under braking
- Increased cornering confidence
- Enhanced damping consistency
- Improved bump absorption
- Better bottoming resistance
- More planted front-end feel
- Increased rider feedback and control
- Precision-machined internal components
- Designed for motocross and off-road racing
Riding Applications
- Professional Motocross
- Professional Supercross
- GP and technical terrain
- Off-road racing
- Vet and amateur racing
- Enduro and cross-country riding
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YZF 450 2014-2026
YZF 250 2014-2026
YZ 125 2006-2026
YZ 250 2006-2026
TRIUMPH TF 250-X 2025-2026
TRIUMPH TF 450 RC EDITION 2025
TM MX/EN 125, 144 FI 2013-2026
TM MX/EN 250 FI-ES 2013-2026
TM MX/EN 300 FI-ES 2013-2026
TM MX/EN 450 FI-ES 2013-2026
Free Piston System
– Free Piston pressure management system designed to support predictable damping characteristics during aggressive riding conditions.
– Dedicated internal pressure management architecture for controlled hydraulic performance.
– Internal oil compensation system designed to maintain stable damping response during repeated impacts and demanding riding conditions.
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 controlled response on braking bumps).
Rebound shims ID = 6 mm (uses triangular mid-valve shims designed to reduce oil turbulence on compression).
Low friction NBR bottom seal.
Ability to extend the cartridge through the nylon washers.
| Weight | 4 lbs |
|---|---|
| Dimensions | 44 × 6 × 4 in |
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