The Yamaha RXZ 135cc holds a profound sentimental value for me. It was the first ‘big’ motorcycle my late father ever bought for me, a significant step up from the smaller bikes I’d ridden before. This two-stroke machine, with its manual clutch, became my daily companion, transporting me to work and my grandmother’s house. Image source: Wikipedia / lanxism
Read these first:-
- My Top 3 Epic Motorcycle Rides Watched on Youtube
- Childhood Memories: Part 15 – Fast Exciting Motorcycle Grand Prix
- Driving Skills 101: What Is The Correlation Between Accidents And Dangerous Roads?
- Driving Skills 101: Stopping Stupid Pesky Motorcyclists From Our Roads Part 1
- Driving Skills 101: Stopping Stupid Pesky Motorcyclists From Our Roads Part 2
My Personal Yamaha RXZ
One of the advantages of visiting my grandmother’s house on the weekends and during the long holidays is the opportunity to learn to ride my uncles’ bikes which came in handy when I went for my motorcycle driving lessons and the license examinations. This is because we did not have any cars (except the Austin Morris 1100) or any bikes at home so we often took the bus or occasional taxi to go anywhere.
Given our family’s financial conditions back then, I gathered that it was more likely I would be buying a bike than a car so I wanted to get the motorcycle license first. Once I had a valid motorcycle license, my uncles would allow me to ride their bikes to the town on errands and when one of my uncles went outstation for work, I was able to ride his trusted, old Honda Cub to college.
Then one day, my Dad managed to negotiate with one of my uncles to get a 3rd hand RXZ bike as my gift for finishing college. I was clueless with a clutch bike so it took me some time to master the clutch change just right. This was also the time I decided to wear proper riding attire, riding a Yamaha RXZ with a full-face helmet, riding gloves, and a cheap jacket (I would get a proper jacket when I moved on to another clutch bike, Yamaha Y110 Super Sports much later).
The problem with the RXZ that I had was that since it was not new, it was not long before I started to have a series of breakdowns. Almost every weekend, I had to visit the motorcycle workshop to fix one thing after another, the major ones would be a faulty alternator. The maintenance cost is also higher as it requires 2T engine oil. One fine day, I had enough and decided to dispose of the bike for once and for all as it was beyond further repairs and I went back to taking public transport for my daily ride to work.
The Yamaha RX135, a popular motorcycle model in the 1980s, particularly in Southeast Asia, can be considered the spiritual predecessor to the legendary Yamaha RXZ. Known for its sporty design, powerful engine, and affordability, the RX135 paved the way for the iconic RXZ. Image source: Yamaha
Yamaha RXZ 135 – History And Variants
The Yamaha RXZ 135 is a legendary motorcycle that has left a significant mark in the world of two-wheelers. Here’s a detailed look at its history:
Introduction and Early Years (1985-1990)
The Yamaha RXZ 135 was first introduced in April 1985. It was a two-stroke naked bike that quickly gained popularity in countries like Malaysia, Singapore, and Thailand. The first generation of the RXZ was equipped with a five-speed transmission and a solid front disc brake. It shared the same platform and chassis as its predecessor, the RX-135. The bike was known for its powerful 133 cc engine, which made it a favorite among young motorcyclists.
Upgrades and Evolution (1990-2004)
In 1990, Yamaha upgraded the RXZ with a six-speed transmission and introduced the Yamaha Computerized Lubrication System (YCLS). The YCLS is designed to deliver 3 key improvements:-
- Reduced Emissions: By precisely controlling oil delivery, YCLS helps to minimize the amount of unburned oil that enters the combustion chamber. This results in cleaner exhaust emissions and reduced environmental impact.
- Improved Fuel Efficiency: Efficient oil delivery can also lead to improved fuel economy, as less fuel is wasted on excessive oil consumption.
- Enhanced Performance: The optimized lubrication provided by YCLS can help to protect the engine and maintain peak performance.
The bike also received a new front cowl and gauge cluster. These upgrades enhanced the bike’s performance and appeal. The RXZ continued to evolve, and in 2004, it underwent a significant restyling. The rear lights were borrowed from the Yamaha Y125Z, and a catalytic converter was installed to meet Euro 3 regulations.
End of Production and Legacy (2011-Present)
Production of the Yamaha RXZ 135 ended in 2011. Unfortunately, the Yamaha RXZ 135 didn’t have a single direct replacement. Instead, Yamaha introduced several models that catered to different segments and addressed the evolving market demands. Some of these models include:
- Yamaha Y125Z: This model, while not a direct performance successor, continued to offer a sporty look and a reliable engine. It became popular for its fuel efficiency and ease of maintenance.
- Yamaha 135LC: This model focused on performance and sportiness, featuring a liquid-cooled engine and a more aggressive design.
The Yamaha Y125Z was introduced in 1998, succeeding the Yamaha Y110SS. It was the first two-stroke underbone motorcycle equipped with a catalytic converter and was known for its lightweight construction, making it nimble and easy to maneuver in traffic. The production of the Y125Z ceased in 2017, marking the end of an era for two-stroke underbone motorcycles. Image source: Moto Malaya
Specifications of the Yamaha RXZ
The Yamaha RXZ 135 is a legendary two-stroke motorcycle known for its performance and iconic design. Here are some of its key specifications:
Engine:
- Type: 2-stroke, single-cylinder, air-cooled
- Displacement: 132 cc
- Power: 14 bhp @ 7500 rpm
- Torque: 12 Nm @ 6500 rpm
- Bore x Stroke: 58 mm x 50 mm
- Compression Ratio: 10.1:1
- Transmission: 5-speed manual
- Cooling: Air-cooled
Dimensions:
- Length: 1997 mm
- Width: 740 mm
- Height: 1070 mm
- Wheelbase: 1245 mm
- Ground Clearance: 145 mm
- Seat Height: 770 mm
- Kerb Weight: 115 kg
- Fuel Tank Capacity: 10.5 liters
Brakes:
- Front: 240 mm disc
- Rear: 130 mm drum
- Front: Telescopic hydraulic shock absorbers
- Rear: 5-step adjustable hydraulic shock absorber
Wheels & Tires:
- Front: 2.75×18″
- Rear: 3.00×18″
Note: These specifications may vary slightly depending on the specific model year and any modifications made to the motorcycle.
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A walkabout through a collection of meticulously restored RXZ variants reveals a testament to the enduring appeal of this iconic machine. These pristine examples, many commanding premium prices, showcase the dedication of owners who have painstakingly brought these motorcycles back to their former glory.
RXZ Direct Competitors
The Yamaha RXZ has carved a significant niche in the motorcycle segment, particularly among enthusiasts who value performance and reliability. There was however other direct competition from other manufacturers.
Honda Raider HX135
The Honda Raider 135, also known as the Honda HX135, is based on the Honda Supra GTR, a popular underbone model in Indonesia. Introduced in the 1980s as part of Honda’s lineup of two-stroke motorcycles, the Raider 135 quickly gained popularity in Southeast Asia, particularly in Malaysia and the Philippines.
The Raider 135 became well-known for its robust performance, reliability, and stylish design. It was equipped with a five-speed transmission, allowing for smooth gear shifts and an enhanced riding experience. The bike’s front disc brake provided effective stopping power, ensuring safety for the rider. Its sporty look, featuring a sleek body, sharp lines, and vibrant colors, appealed to young riders who sought a combination of speed and style.
Suzuki Panther TXR150
The Suzuki Panther TXR 150, also known as the Suzuki TXR 150 was introduced in the late 1980s as part of Suzuki’s lineup of two-stroke motorcycles. It featured a 147cc two-stroke, single-cylinder, forced air-cooled engine, which provided a good balance of power and efficiency.
The Panther TXR 150 was designed to cater to the needs of riders who sought a combination of speed and style. It came with a sporty look, featuring a sleek body, sharp lines, and vibrant colors. The bike was equipped with a five-speed transmission, which allowed for smooth gear shifts and enhanced riding experience. The front disc brake provided effective stopping power, ensuring safety for the rider.
Kawasaki KR150
The Kawasaki KR150 was a high-performance two-stroke motorcycle that captivated riders in the late 1980s and early 1990s. Powered by a potent 147cc, single-cylinder, two-stroke engine, the KR150 delivered an exhilarating performance with its potent power delivery and impressive top speeds.
A key feature contributing to its performance was Kawasaki’s Integrated Power Valve System (KIPS). This innovative technology optimized engine performance across the entire RPM range by precisely controlling the flow of exhaust gases. By adjusting the timing of the exhaust valve opening and closing, KIPS enhanced low-end torque and significantly boosted top-end power, resulting in an exhilarating riding experience.
The KR150’s lightweight chassis further complemented its performance, allowing for agile handling and quick acceleration. Coupled with its sleek and aerodynamic design, the KR150 was a true embodiment of sportiness.
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The motorcycle that I bought brand new was the later variant, Yamaha Y110SS which came with dual-clutch. This was not my first choice but I was forced to change my options after I got cheated by a Modenas motorcycle dealer near my house. It took some time for me to get back my downpayment.
Final Say
There are still active Yamaha RXZ motorcycle clubs in Malaysia, and you can find used Yamaha RXZ motorcycles for sale, although most of them are sourced from Thailand. However, the market has generally shifted from 2-stroke to 4-stroke motorcycles.
While 2-stroke engines are known for their lightweight construction and impressive power-to-weight ratio, they also produce significantly more harmful emissions, including unburned hydrocarbons and particulate matter. Additionally, 4-stroke engines generally offer better fuel economy compared to 2-stroke engines.
The Yamaha RXZ 135 is indeed one of the iconic motorcycles from the era of sporty 2-stroke motorcycles. It was a time when these bikes were celebrated for their performance and style. Had the Yamaha RXZ I owned been in good working order, I would have probably kept it until I got married. However, in the name of safety, I was forced to ditch my motorcycle as my daily ride and start using a car. The Yamaha RXZ 135 remains a cherished memory, representing a bygone era of thrilling rides and youthful exuberance.