Honda CRF450R: Elevating Performance

A Deep Dive into Enhancing Your Honda CRF450R

The Honda CRF450R is a formidable machine straight from the factory, a testament to Japanese engineering. However, for those who crave that extra edge, that truly personalised feel, the journey of customisation and performance enhancement is an irresistible one. This article delves into a project that took a standard CRF450R and transformed it into a 'seriously epic beast', focusing on key areas that elevate its performance, aesthetics, and overall riding experience. Whether you're a seasoned racer or a passionate enthusiast, understanding these modifications can provide valuable insights into unlocking your bike's full potential.

Suspension: The Foundation of Performance

The stock suspension on the Honda CRF450R is, by many accounts, quite capable. For grass track racing, the initial aim was to settle the bike and achieve a better 'squat' for improved handling. However, the introduction of Kashima coating marked a significant turning point in the build. This advanced treatment is renowned for its ability to reduce friction, leading to cooler operating temperatures, extended service life, and crucially, more consistent performance. Beyond the tangible benefits, Kashima coating imparts a distinct 'factory' look, a mark of a truly trick build.

The suspension was entrusted to MCD Racing, who performed a revalve with the objective of achieving a softer feel without compromising its ability to handle aggressive track conditions. The goal was to ensure the suspension utilised its full travel effectively, absorbing acceleration and braking bumps while remaining composed under heavy loads. This is a delicate balancing act, aiming for plushness without sacrificing firmness when needed for larger impacts.

In addition to the internal revalve, a Zeta adjustable lowering link was investigated. The CRF450R is known to have a slightly high rear end, and this component allows for adjustments to better balance the bike, enhancing its handling characteristics, particularly on tracks like Amcross. This attention to detail in the suspension setup is fundamental to rider confidence and overall performance.

The Finishing Touches: Crafting a Custom Machine

With the suspension undergoing such significant enhancements, the decision was made to elevate the entire bike into a custom build, with MCD Racing spearheading the project from their Sydney workshop. Preload Performance played a crucial role by applying ceramic coating to various components. This included the inner clutch, select suspension elements, and brake parts, all contributing to a premium, factory-like finish.

The pursuit of customisation extended to a wide array of Zeta products, imported by Steve Cramer Products in Australia. The holeshot button was a key addition, designed to keep the front wheel firmly planted during aggressive launches, a necessity given the CRF450R's potent power delivery. Other Zeta components fitted included DRC radiator hoses, billet engine plugs, a billet bling kit, oil filter cover, clutch cable guide, and a rear brake clevis. Each of these small additions contributes to both the bike's aesthetics and its functionality.

A particularly noteworthy component was the Zeta Revolver Shift Lever. For riders with smaller feet, or even those with average-sized feet navigating the demands of grass track racing, the standard shift lever can sometimes be challenging to engage. The Revolver Shift Lever's adjustable tip, mounted on a cam, allows for a customisable range of movement, catering to individual rider preferences and ensuring positive gear changes.

Cockpit Enhancements for Superior Control

The rider's interface with the machine is paramount, and the cockpit of this CRF450R received a significant upgrade with EZE triple clamps. The quality of manufacturing from EZE is exceptional, explaining their prevalence on factory race bikes. These Australian-made clamps are incredibly lightweight yet robust, and their visual appeal is undeniable.

To complement the EZE triple clamps and complete the factory-inspired cockpit, Renthal Twinwall handlebars were chosen in the 996 bend. While the stock Honda bend is commendable, the Twinwalls offer enhanced strength, a valuable asset for absorbing impacts and preventing handlebar damage during a crash. The 996 bend is notably similar to the '19 CRF bend, which is only available in FatBars, making the Twinwalls a desirable alternative for those seeking added durability. Renthal Medium waffle grips were also fitted for optimal comfort and control.

Power to the Ground: Optimising Drivability

The CRF450R already possesses ample power, but the project aimed to further enhance the bottom-end torque and overall responsiveness. This was achieved by fitting a Yoshimura RS-9 exhaust system. At the time of the build, exhaust options were somewhat limited, but Yoshimura's strong relationship with Honda, facilitated by Australian importer Serco, ensured a swift supply for the CRF. The build quality of the Yoshimura system is superb, with carbon fibre end caps adding a touch of trickery to an already impressive product.

The impact of the Yoshimura exhaust was noticeable, reportedly beefing up the bottom-end power and extending the rev range, all while producing a pleasing, non-offensive sound. EZE also supplied their premium wheels for the build. The hubs, in a striking dark bronze with a red tinge, were laced to Excel A60 rims using Bulldog spokes. This combination is renowned for creating the strongest possible wheels, without compromising on aesthetics.

For Amcross racing, Pirelli Mid-Soft tyres were chosen for the EZE wheels. These tyres perform exceptionally well on the typically loamy surfaces encountered at Amcross, maintaining their effectiveness even as the track conditions evolve throughout the event. Renthal provided Ultralight sprockets and a racing chain. A change to a 51-tooth rear sprocket was made to facilitate easier engagement into third gear and to provide an extra punch off the start line.

Aesthetics: Making a Statement

With the mechanical aspects of the build nearing completion, the visual transformation began with a Polisport Nardo plastics kit. The author, owning a graphics business named Moto Kit, designed a factory-styled graphic kit that complemented the grey plastics without overpowering them. The red front fender and fork guards were retained to provide a visual break and add contrast to the predominantly grey scheme. An EZE custom billet clutch cover, even featuring the Dirt Action logo, added a unique personalised touch.

A black and white ribbed Moto Kit seat cover was installed. The standard seat cover was found to be slippery, causing the rider to slide back during rutted sections, leading to unwanted wheelstands and a loss of momentum. The new seat cover provided the necessary grip and confidence.

On the Track: First Impressions

The project bike, having undergone extensive modifications, was taken directly to the first round of Amcross without any prior testing. This was due to a few unforeseen delays. Rolling onto the practice track, with suspension sag set by a helping hand, the initial ride was overwhelmingly positive. The bike felt incredible. The only adjustment made over the entire weekend was two clicks of compression on the forks to improve their hold-up under braking. The results spoke for themselves: blistering starts, a race win, and a second-place overall finish for the weekend. The rider was ecstatic, a testament to the effectiveness of the carefully selected modifications.

Lubrication and Protection: The Unsung Heroes

Maintaining a high-performance machine like the CRF450R requires the use of premium oils and lubricants. For this project, Motul was the chosen brand. Their 7100 10W40 oil, coupled with Shine and Go, Off-Road Chain Lube, Chain Clean, and Brake Clean, ensured the bike remained in optimal condition throughout the season. HiFloFiltro air filters, used in conjunction with Motul Air Filter oil, were essential for keeping the engine breathing freely and efficiently.

Key Components Used in the Build:

Frequently Asked Questions:

Q1: What is the recommended oil for a Honda CRF450R?
For the Honda CRF450R, high-quality motorcycle-specific oils are recommended. Motul 7100 10W40 is a popular choice, offering excellent protection and performance. Always consult your owner's manual for the manufacturer's specific recommendations.

Q2: What kind of modifications can I do to a CRF450R?
The CRF450R is a popular platform for modifications. Common upgrades include suspension tuning (revalving, coatings like Kashima), exhaust systems for improved power delivery, aftermarket triple clamps for better handling, custom graphics and plastics for aesthetics, and various billet components for durability and visual appeal. You can also enhance performance with different sprockets and tyres suited to your riding discipline.

Q3: What is the difference between the CRF450R and CRF450L regarding oil filters?
The provided text specifically mentions K&N automotive oil filters for the Honda CRF450L, highlighting their high oil flow rates and heavy-duty construction. While the CRF450R also requires an oil filter, the specific part numbers and brands may differ. It's crucial to verify the correct oil filter for your CRF450R model, as using an incompatible filter can lead to engine damage. The CRF450R in the project build used a HiFloFiltro air filter, but the oil filter was not explicitly stated.

This project demonstrates that with careful planning and the right components, the already impressive Honda CRF450R can be transformed into an even more capable and visually stunning machine. The pursuit of performance and personalisation is a rewarding journey for any motorcycle enthusiast.

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