
Original Honda PCX 125 Rear Primary Clutch Variator (22100-KWN-900) | 2010-2020
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Designed with precision engineering, this offers unmatched performance and durability.
The Rear Primary Clutch Variator (22100-KWN-900) is the original Honda secondary driven pulley for the Honda PCX 125 (2010-2020). This precision-engineered component works in tandem with the front variator to constantly adjust gear ratios, ensuring the e-SP engine remains in its optimal power band for both acceleration and fuel economy.
Vetted by our Lead Engineer. Leveraging 30 years of mechanical pedigree, every part is inspected for material density and exact tolerances to ensure a 'Right-First-Time' fit.
Guaranteed fitment for Honda PCX125 or free returns.
Delivery Information
Orders placed before 12:00pm (UK time) are usually dispatched the same working day. Orders placed after this time will be dispatched on the next working day.
In the rare event of a stock shortage, we will notify you promptly and issue a full refund within one working day if the item cannot be supplied.
Once dispatched, tracking information will be provided via email, provided valid contact details are supplied at checkout.
While we aim to meet all estimated delivery times, delays may occasionally occur due to circumstances beyond our control, such as courier issues, weather conditions, or operational disruptions. Should this happen, we will keep you informed.
Delivery Areas
We currently deliver to:
• United Kingdom
• Republic of Ireland
• Isle of Man
• Jersey & Channel Islands
• Most European destinations
If you are unsure whether we deliver to your location, please contact us prior to placing your order.
Verified UK Entity #15361806 operating from our NW10 London Logistics Hub. Skip the wait with express workshop pickup.


Product Compatibility
Compatibility charts are for reference only. Please compare part numbers and manufacturers' details. Contact us before ordering if unsure to avoid delays or refund charges.
Trademark Disclaimer: All trademarks, brand names, and logos remain the property of their respective owners and are used solely for identification and compatibility purposes. We are an independent retailer and are not affiliated with any authorized dealer or distributor.
- 22100-KWN-900
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- PCX125
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- Honda
- 125
- A
- PCX125
- NEW
Product Overview
This high-quality Original Rear Primary Clutch Variator is designed to meet or exceed factory performance standards and is suitable for Honda PCX125 (2010-2020) models.
The rear primary clutch variator forms the driven pulley assembly on the output side of the CVT belt system, working in conjunction with a spring and torque cam to maintain belt tension and provide the counter-pressure needed for smooth, stepless ratio transitions. As belt load increases or throttle demand changes, the driven pulley adjusts to maintain correct belt wrap and tension across the CVT range. A worn or damaged driven variator results in inconsistent belt tension, belt slipping, rough ratio transitions, and reduced power delivery to the rear wheel. This original replacement restores correct driven pulley operation, ensuring smooth belt engagement and reliable power transfer on your Honda PCX125.
- Brand New Original Rear Primary Clutch Variator
- Part Number: 22100-KWN-900
- Original replacement for Honda PCX125 (2010-2020)
- Ensures consistent belt tension and smooth ratio transitions across the CVT range
- Restores correct driven pulley operation and reliable rear wheel power delivery
- Direct fit, no modification required
- Ideal replacement during CVT service or driven pulley overhaul
- London: Express same-day delivery (2-3 hours)
- Rest of UK: Same-day dispatch on orders before 1 PM (3-4 business days delivery).
- Up to 75% off for B2B Trade Accounts. Independent UK garages, apply now.
• Honda PCX125 owners with a worn, damaged, or slipping rear primary clutch variator
• Replacing the Rear Primary Clutch Variator during CVT service or driven pulley overhaul
• Mechanics and workshops carrying out Honda PCX125 CVT transmission servicing
• Riders wanting to restore smooth CVT performance and reliable power delivery to their Honda PCX125
• Anyone sourcing a guaranteed original replacement for their Honda PCX125
Complete Part Guide
The rear primary variator on your Honda PCX125 2010-2020 acts as the secondary half of the CVT system, housing the clutch assembly and the torque-sensing cam. In heavy London traffic, the internal "sliding" faces of this unit are under constant movement. Over time, the pulley faces can develop grooves or "stretching" from the drive belt, which leads to a loss of top speed and inconsistent acceleration. This original Honda replacement (22100-KWN-900) ensures the belt travels smoothly across the full range of the pulley. In physical stock at Part Hive's London hub, order before 1 PM for guaranteed same-day UK dispatch.
When inspecting a Honda PCX-125 (2010-2020) for transmission lag, we check the faces of the 22100-KWN-900 for "stepping," specifically small ridges worn into the metal by the belt during long periods of riding at a constant speed. These ridges cause the bike to "hang" at certain RPMs rather than shifting linearly. Using an original Honda rear variator is vital because the metal's surface hardness is specifically matched to the original belt's compound, unlink low-grade alternatives that are often made of softer alloys that wear down rapidly, creating metal dust that can contaminate the clutch shoes. Replacing a worn rear variator restores the crisp, immediate gear-ratio changes needed for safe, predictable filtering through traffic.
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