EPICA Showa49 Cartridge – Honda CRF / Kawasaki KX450 / Suzuki RMZ450
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 cartridge upgrade for Showa 49mm forks. Improves front-end control, damping consistency, and rider confidence.
1 in stock (can be backordered)
EPICA Showa 49 Cartridge Kit
The EPICA Showa 49 Cartridge Kit is a premium closed-cartridge suspension upgrade for Honda CRF250R/450R, Kawasaki KX450, and Suzuki RMZ450 models equipped with Showa 49mm forks. The system improves front-end control, damping consistency, rider comfort, and overall chassis stability across a wide range of riding conditions.
Designed for riders seeking a more connected and controlled front-end feel, the EPICA system improves comfort through braking bumps and chop while maintaining support during aggressive braking, jump landings, and repeated hard impacts. As a result, riders gain improved confidence, traction, and predictability at speed.
Technology Overview
The EPICA Cartridge system uses a high-performance closed-cartridge design that improves oil control, damping consistency, and tuning precision compared to OEM fork internals.
Additionally, the system increases mid-stroke support and bottoming resistance while maintaining comfort and front-end feel across changing terrain conditions.
Key features include:
- Closed-cartridge damping system
- Improved damping consistency
- Enhanced mid-stroke support
- Increased bottoming resistance
- Precise damping adjustment capability
- Improved bike stability under braking
- Expanded tuning range for riders and tuners
Meanwhile, the refined internal damping design helps reduce rider fatigue during long motos and demanding riding conditions.
Performance Benefits
- Improved front-end traction and cornering confidence
- Increased damping consistency during long motos
- Reduced harshness through braking bumps and chop
- Improved braking stability and corner entry feel
- More controlled response during jump landings and square-edge impacts
- Increased rider comfort without sacrificing support
- Wider tuning range for rider-specific setup preferences
Works Construction
The EPICA Cartridge Kit features precision-machined internal components designed for high-performance racing and demanding riding conditions. The system maintains long-term durability, serviceability, and consistent damping performance.
Riding Applications
The EPICA Showa 49 Cartridge Kit is ideal for:
- Professional Motocross
- Profressional Supercross
- GP and technical terrain
- Off-road racing
- Vet and amateur racing
CRF 450 2017-2026
CRF 250 2018-2026
KXF 450 2018-2026
RMZ 450 2018-2026
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.
Fork springs are sold separately. Contact us before purchase for spring-rate recommendations based on rider weight, skill level, and riding conditions.
Required spring lengths:
- Showa 472mm springs for models up to 2024
- Showa 500mm springs for 2025+ models
Additionally, 500mm spring configurations may be requested for certain 2017–2025 Showa applications and should be specified during purchase.
| Weight | 8 lbs |
|---|---|
| Dimensions | 24 × 8 × 6 in |
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