V-Belt For Motorcycles

Raydafon motorcycle V-belts are CVT drive belts for 50cc–150cc scooters, built with aramid cord and heat-resistant CR rubber. VS15–VS22 profiles, OEM branding, sample orders and wholesale pricing available.

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Product Description

Raydafon V-Belts for Motorcycles are CVT drive belts built for 50cc, 90cc, 100cc, 125cc and 150cc scooter and motorcycle transmission systems. Each belt uses an aramid (Kevlar) tensile cord inside a heat-resistant chloroprene rubber body, so it holds its width and grip under continuous high-temperature CVT operation instead of stretching, slipping or cracking early.

If you are sourcing motorcycle V-belt replacement stock for a workshop chain, aftermarket distributor, or OEM assembly line, this page gives you the profile range, material construction, fitment data and the exact information we need to quote you accurately.

Sourcing Motorcycle V-Belts in Bulk?

Get factory-direct pricing, OEM branding and a confirmed fitment check for your engine model — reply within 24 working hours.

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Aramid (Kevlar) Cord 100% aramid tensile cord with aramid blended into upper and lower rubber layers for high side-pressure rigidity.

Heat-Resistant CR Rubber Chloroprene body resists CVT heat build-up and maintains grip without glazing or cracking.

Low-Stretch Design Designed to hold its effective length and prevent the reduction in acceleration and top speed caused by belt stretch.

OEM / ODM Ready Custom profiles, belt dimensions, your logo and branded packaging available for volume orders.

How a Motorcycle CVT V-Belt Works

The V-belt sits between the front variator pulley and the rear driven pulley of a scooter's continuously variable transmission (CVT). As engine speed rises, centrifugal rollers push the variator plates together, forcing the belt outward on the front pulley and inward on the rear pulley. This changes the drive ratio continuously — no gear steps, just smooth acceleration.

The belt is the only component transferring engine torque to the rear wheel. If it stretches, the effective ratio range is reduced and acceleration drops. If it glazes or cracks from heat, it can slip under load or fail outright. That is why aramid cord construction and heat-resistant rubber compound matter for scooter V-belt replacement quality.

Original Cutting-Type V-Belt Size Chart

The following cutting-type V-belt sections are also available. These cover a wide range of industrial and motorcycle auxiliary drive applications beyond the CVT drive belts listed above.

Type	Top Width (mm)	Height (mm)	Angle
AVX10	10	8	40°
AVX13	13	9	40°
AVX15	15	9	40°
AVX17	17	11	40°
AVX22	22	13	40°
XPZ	10	8	40°
XPA	13	10	40°
XPB	17	14	40°
XPC	22	18	40°
3VX	9.5	8	40°
5VX	16	13.5	40°
8VX	25.4	23	40°

Agriculture Machinery Variable-Speed Belt

Dimension	Symbol	HI	HJ	HK	HL	HM
Nodal width	bp	23.6	29.6	35.5	41.4	47.3
Upper width of the teeth	b	25.4	31.8	38.1	44.5	50.8
Height of the belt	h	12.7	15.1	17.5	19.8	22.2
Height above nodal circle	B	3.8	4.7	5.7	6.6	7.6

V-Belt Profile & Dimension Reference

Below are the common CVT V-belt profiles we supply. Final dimensions are confirmed against your engine model or the old belt's markings. Send us the top width, thickness and outer circumference from your existing belt, and we will match the correct profile.

Profile	Top Width (mm)	Thickness (mm)	Angle
VS15	15.0 ± 0.5	8.0 ± 0.5	40°
VS15.5	15.5 ± 0.5	8.5 ± 0.5	40°
VS16.5	16.5 ± 0.5	8.5 ± 0.5	40°
VS17	17.0 ± 0.5	9.0 ± 0.5	40°
VS18	18.0 ± 0.5	9.5 ± 0.5	40°
VS19	19.0 ± 0.5	10.0 ± 0.5	40°
VS20	20.0 ± 0.5	10.5 ± 0.5	40°
VS22	22.0 ± 0.5	11.5 ± 0.5	40°

Engine Model Coverage

Common engine families

50cc class — Honda Dio/Lead, Yamaha Vino/Jog, Suzuki Address 50, Kymco Agility 50
90–100cc class — Honda Wave 100, Yamaha Mio 100, Suzuki Shogun 110
125cc class — Honda Vario 125, PCX 125, Yamaha Mio 125, Suzuki Skywave 125
150cc class — Honda Vario 150, PCX 150, Yamaha Aerox 155/NMAX, Suzuki Skydrive

Also available

Cutting-type V-belts — AVX10, AVX13, AVX15, AVX17, AVX22, XPZ, XPA, XPB, XPC, 3VX, 5VX, 8VX
Agricultural variable-speed belts — HI, HJ, HK, HL, HM
Auto V-belts and multi-wedge belts for motorcycle auxiliary drives
Custom profiles produced to drawing or sample

Not sure which profile fits your engine?

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What Affects Motorcycle V-Belt Life

Heat — CVT housings run hot in stop-start traffic; a heat-resistant CR compound resists glazing and cracking.
Stretch — low-stretch aramid cord keeps the effective length stable so acceleration and top speed do not drop.
Contamination — dust and belt debris accelerate wear; the belt should run in a clean, dry CVT housing.
Riding style — holding throttle against the brake or repeated hill starts overheats the belt and shortens its service life.
Roller and pulley condition — worn variator rollers or a scored pulley face will wear a new belt faster.

Most manufacturers recommend CVT inspection every 8,000 km and belt replacement at 20,000–25,000 km or every two years under normal use. Replace immediately if the belt shows cracks, missing cogs, glazing, or a width reduction of 1 mm or more from the specified dimension.

Quality Control You Can Audit

Every belt batch goes through raw material inspection, cord tension verification, dimensional checks (top width, thickness, outer circumference), and high-temperature and low-temperature performance testing before packing.

Read how we manage process control and traceability on our Quality page, or see the full company profile for capacity and equipment.

Ordering & Supply Information

What to send for a fast quotation

Engine model and year, or OEM belt part number
Old belt dimensions: top width, thickness, outer circumference (or a photo of the belt markings)
Quantity, destination port, and whether OEM branding is needed
Whether you need samples for fitment and quality testing before bulk order

Supply terms

Sample and trial orders accepted for quality verification
MOQ depends on belt profile and stock status — confirm per order
Export packing: individual boxes, then carton + pallet
OEM logo and custom packaging available for volume orders

Get Your Motorcycle V-Belt Quote

Send your engine model, belt dimensions and quantity — our team confirms the correct profile and returns the quotation within 24 working hours.

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Maintenance Tips for Longer Belt Life

Inspect the belt every 8,000 km or at each CVT service interval — look for cracks, missing cogs and glazed surfaces.
Clean the CVT housing and blow out belt dust during service to prevent abrasive wear.
Check variator rollers and pulley faces at the same time — a worn roller will destroy a new belt quickly.
Allow a 50–100 km break-in period after fitting a new belt before pushing the scooter to full throttle.
Avoid holding throttle against the brake; this overheats the belt and clutch shoes.

FAQ — Motorcycle V-Belt

What motorcycle models does this V-belt fit? It covers 50cc, 90cc, 100cc, 125cc and 150cc scooter and motorcycle engine families with CVT transmission. Common applications include Honda Vario, PCX, BeAT and Scoopy; Yamaha Mio, Aerox and NMAX; and Suzuki Address and Skywave. Send your engine model and frame number for a confirmed fitment check.

What material is the motorcycle V-belt made of? The belt uses a chloroprene rubber (CR) body with an aramid (Kevlar) tensile cord. Aramid fiber is also blended into the upper and lower rubber layers to improve side-pressure rigidity, tensile strength and slip resistance under high-temperature CVT operation.

What is the MOQ and lead time for wholesale orders? Sample orders are accepted for quality verification before bulk purchase. MOQ depends on belt profile and whether the size is in stock or requires a new mould. Lead time is typically 2–3 days for samples and 20–30 days for mass production. Send your quantity and destination port for a quotation.

When should a motorcycle V-belt be replaced? Most manufacturers recommend CVT inspection every 8,000 km and belt replacement at 20,000–25,000 km or every two years under normal use. Belts used in heavy traffic, steep terrain or aggressive riding should be inspected more frequently. Replace immediately if the belt shows cracks, glazing, missing cogs or a width reduction of 1 mm or more.

Still Have Questions About Motorcycle V-Belts?

Send your engine model and belt dimensions — our team will confirm the correct profile and price for your order.

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Hot Tags: V-Belt For Motorcycles, Motorcycle CVT Drive Belt, Scooter V-Belt Replacement, OEM Motorcycle Belt, Wholesale Motorcycle V-Belt, CVT Transmission Belt

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