Motorcycle
- Deep contours
- Lean and contact zones
- Rider-position brief
- Heat and abrasion test targets
A saddle cover is a
formed component,
not a flat swatch.
ROYI develops Semi PU and PVC Calendered artificial-leather constructions for motorcycle, scooter/e-moped and bicycle/e-bike saddles. Surface, backing and formability are matched to the seat geometry and buyer-defined validation plan.
Seat geometry / use case
Scooter / E-Moped
- Compact, step-through shapes
- Frequent on/off use
- Weathering test plan
- Cleaning-protocol review
Bicycle / E-Bike
- Narrow saddle shapes
- Pedal clearance and movement
- Top-surface wear target
- Weight-conscious builds
Construction movement spectrum
- Four-way
- Stretches in all directions
- One-way
- Stretches in one direction
- Stable
- Low stretch, holds shape
Backing controls movement. Surface, embossing and finish are matched to the entire construction.
Two material routes
Semi PU Saddle Leather
For deep contours and complex curves
- Four-way backing direction
- Candidate for complex 3D geometry
- Hand feel and support to confirm
- Wear target defined by the buyer
PVC Calendered Leather
For compact and flatter saddles
- Dimensionally stable direction
- Low-movement construction
- Cutting and sewing trial required
- Cost and wear target to confirm
Texture laboratory
Surface directions for visual and sample review
Topo Current
Flowing-line concept for zoned visual direction; drainage or cleanability requires a defined test.
Fractured Hex
Bold geometry adds structure and visual identity.
Directional Prism
Angular-facet concept for directional appearance; friction must be measured on the approved sample.
Arc-Lock Microgrip
Micro-dot and arc concept for contact-zone sampling; no anti-slip result is claimed.
Clean Fine Grain
Fine-grain visual direction whose hand feel and cleaning method are confirmed during approval.
Forming sequence
- 1.Flat construction
Engineered coating and backing in sheet form.
2.Controlled movementBacking enables the right stretch in the right zones.
3.Wrapped contourReview fit, wrinkle control and appearance on the buyer's seat form.
Functional zoning
Texture is zoned for purpose, not decoration.
Contact zone
Select the texture direction, then validate friction and rider movement on the approved sample.
Side-panel release
Review texture, mounting behavior and appearance on the finished side panel.
Identity zone
Signature texture for brand expression.
Test evidence
Taber rotary abrasion: H-18 wheels; 500 g on each of two arms; selected Semi PU sample constructions; 5,000–7,000 cycles without breakthrough.
Results do not represent every color, grain, backing construction or production batch.
Next tests / planning only
No quantitative result or certification is claimed for these items. Method, condition and target must be confirmed.
UV
Hydrolysis
Seam / Peel
Flex
Water
Anti-Slip
Buyer questions
Short answers before sampling
What determines whether saddle leather has four-way stretch, one-way stretch or low stretch?
The backing construction is the primary control for movement direction and recovery. The surface layer, embossing and finish must then be matched to that backing so the complete construction can form without unintended distortion.
When is Semi PU suitable for a motorcycle or scooter seat?
Semi PU is the main route for deep contours, complex curves and saddle covers that need controlled four-way movement. The final construction still needs to be confirmed against the seat geometry, forming process and target tests.
When is PVC calendered leather suitable for a bicycle saddle?
PVC calendered leather is a practical route for compact or flatter saddles where dimensional stability, controlled thickness and low movement are priorities.
What abrasion result has ROYI recorded for selected Semi PU saddle constructions?
In Taber rotary abrasion testing with H-18 wheels and 500 g on each of two test arms, selected Semi PU sample constructions reached 5,000 to 7,000 cycles without breakthrough. This result is limited to the tested samples and setup.
Does the 5,000 to 7,000 cycle result apply to every color, grain, backing and batch?
No. It does not represent every color, grain, backing construction or production batch. A buyer-specific sample and agreed test plan are required before approval.
Are UV, hydrolysis, seam, peel, flex, water and anti-slip results already confirmed?
No quantitative result is claimed on this page for those properties. They are listed as planning items that can be confirmed against the buyer's required method, condition and acceptance target.