Avoid pencils made with tropical and pitted woods. These pencils can be identified by the small holes or pits in the wood. The wood for these pencils is often unsustainably harvested, and the pencils tend to sharpen unevenly.
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Avoid pencils made with extruded plastic. These pencils can be identified by their smooth, plastic casing. These pencils are not biodegradable, and do not sharpen well.
Japanese pencils are unlike any other in the world. Typically crafted by true artisans, they are known for their smooth graphite and the best finishing in the world. Pencils made in Japan include Blackwing, Mitsubishi and Tombow pencils.
All bikes start with the frame. BMX race frames are typically made from aluminium. Look out for CNC machined details and things like hydroformed tubing on higher end bikes which help keep the weight down while increasing strength. The geometry of a frame also affects how it rides. You can find out more about that in our BMX race frame buyers guide.
There are 2 main types of headsets. A-headsets are the traditional type with external cups (where the bearings sit) whilst integrated headsets have sealed bearings that sit inside the frame itself.
The diameter of this tube is dependent on the size of the bike with most Mini and junior bikes using a 1&#; diameter and larger bikes using a larger 1-&#;&#; size. Also, look out for a &#;tapered&#; headset which uses a larger 1.5&#; size on the bottom for strength - they also look better with the larger looking carbon forks.
Look for sealed bearings here on higher-end spec bikes. There are two main types of rear hub. A freewheel hub where the drive mechanism is inside a replaceable &#;freewheel&#;, or a lighter and more reliable &#;cassette hub&#;. The cassette allows for easier changing of gearings. 10mm axles are the standard on the rear with some higher spec models using 15mm or 20mm for stiffness and better power transfer.
Most race bikes utilise a spider and chainring system for the front sprocket which allows for easier and quicker gear changes. Although gearings differ between models the standard cog at the rear is a 16t with the front using a 44t pro size bike. Smaller bikes use a smaller chainring at the front to have an &#;easier&#; gearing which is more suited to the rider's power.
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The outside of the wheel. These come in single or double wall versions. Double wall is strongest and is more important on the rear which takes more abuse than the front. Also look out for lighter &#;Aero&#; shaped rims on higher spec bikes for a better weight to strength ratio.
Branded after-market tyres are best here as they offer better weight savings, superior grip and less rolling resistance.
Standard BMX race bikes use a 20&#; diameter wheel/tyre. Smaller bikes use much thinner wheels/tyres for much less rolling resistance such as 1-&#;&#; and 1-&#;&#; widths found on Mini, Junior and Expert Bikes. However once you get to the Pro size bikes you will find full width BMX wheels which accept any 20&#; tyre from a 1.5&#; width through to a 2.3&#;, these allow for much more strength and grip, required by bigger riders. The most common width of tyre on a Pro BMX wheel is 1.75&#;.
Cranks on a Race bike need to be both strong and stiff so that all that power is transferred as efficiently as possible to the back wheel. Smaller bikes typically use aluminium arms with standard square taper BBs which offer great strength to weight ratio and benefit from a standard sizing.
Larger bikes (Pro and larger) typically use stronger splined spindles to accommodate more power and sealed Bearing Euro BB&#;s. Look out for cranks with hollow aluminium arms and outboard Euro BBs which offer less flex on higher spec bikes.
There are many types of seats available on BMX race bikes with lightness being the common goal. Typically you will find one-piece seat post and seat combos for ultimate weight savings. If angle adjustment is a must look out for pivotal seat posts which allow for the angle of the seat to be changed.
The bit that holds your bars to the forks. All stems are comparable in strength but CNC&#;d versions are lighter and offer a much cleaner look. They either clamp the bars from the top (top loader) or the front (front loader).
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