Description

Please be sure to specify your make/model/year in the Model Validator to ensure proper fitment. All designs will work with stock base gaskets and cylinder heights and offer significant improvements over stock heads.

All TSP heads and inserts now include a complete head gasket kit including inner and out cylinder o-rings and head bolt crush washers. Everything you need to install your new TSP head or insert with all new o-rings and seals.

TSP billet cylinder heads are machined from solid 6061 T6 stock and offer improved performance, reliability and fuel economy. They are the best bolt on mod you can buy for your bike!

These TSP billet heads feature TSP’s proven combustion chamber designs and are a MUST HAVE mod for most current model off-road bikes. TSP’s unique combustion chamber designs have been used by thousands of happy customers and have been extensively dyno tested… the gains are consistent and include: increased power throughout the rev range (especially bottom/mid), improved fuel economy, greatly reduced risk of detonation, increased top end life in many models, and much SMOOTHER power delivery.

The unique Billet design has been 100% developed, machined and tested in-house at TSP.

These CNC heads will bolt onto your standard cylinder and are designed to work with standard base gaskets. If you are unsure of your current base gasket thickness we can advise the correct thickness to achieve the necessary cylinder height and squish clearance.

We can also advise baseline jetting specs to go with your new Billet head. The customer takes all responsibility for ensuring that jetting is appropriate for their riding style and conditions.

Included – Medium Compression Head Insert (suits 90% of riders) – TSP standard design, higher compression ratio than stock but still works fine with pump fuel. Gives a very noticeable increase in power throughout the rev range. Provides a much smoother power delivery at low/mid revs. Squish clearance is much tighter than stock. Fuel economy is greatly improved over stock. Recommended for most riders.

Other Compression Ratios

We also have head inserts with various compression ratios for a variety of riding conditions. These inserts are available via special order only. Call Steve at (408)459-8794 or send an email with an inquiry about your specific needs.

LOW COMPRESSION – roughly the same compression ratio as a stock XCW or TE, much tighter squish clearance and better combustion chamber design than stock, suited to Extreme Enduro, resists overheating very well, pulls from very low rpm smoothly and predictably. Still gives a very noticeable change in performance over stock despite compression ratios being similar. Available for special order only.  Please email or call.

HIGH COMPRESSION –best with 91 octane fuel or higher. Squish clearance is much tighter than stock. Gives maximum bottom/mid power but less overrev. More aggressive power delivery.  Suited for higher altitude riding or MX. We do not recommend this design for normal trail riding or enduro racing near sea level. Contact us first if you want more info about this design. Available for special order only.  Please call or email.

VERY HIGH COMPRESSION – this design is targeted at very high elevation riders above 5,000 ft. It will help to make up for the power losses due to thinner air at high elevation. We strongly suggest you do not use this design below 4,500 ft. At these high elevations this head design should give similar results to our Medium or High Comp heads at lower elevations.  Available for special order only.  Please call or email.