KTM 525 EXC/SX
Pistons
95/97/98mm – Pistons
Aftermarket pistons in standard and standard over-bore sizes available from JBS Racing at competitive prices contact us for a quote ben.ballard@jbsracing.co.uk
100mm & 102mm – Pistons
Big-bore pistons developed by JBS Racing for use in the Husaberg which can be used successfully in the KTM engine. See our Husaberg shop for details or contact us for more information ben.ballard@jbsracing.co.uk
Seriously free gaskets, JBS Racing have suppliers that can reproduce any gasket to the same standard as OEM gaskets at a much lower cost. We do not currently have a full set of KTM 525 gaskets for use as a pattern. If you can provide us a with a FULL set of new or used gaskets that are in good enough condition to use a template for making new ones we will give you 3 complete gasket sets for free in return! Obviously this is first come first serve as once we have the pattern we’ll sell them.
The same offer applies to the new KTM 450 sx-f and 505 sx-f if you can supply us with a full set of gaskets as a pattern we will send you 3 full sets in return.
Forged Titanium valves are much stronger and more durable than their cheaper welded cousins. These valves are the very best quality and are CVD coated with proprietary anti-friction coatings for maximum performance and long life in race engines.
For instillation information for Titanium valves see - Install Info
KTM LC4 660 SMC
Piston
102mm Piston
High quality aftermarket forged piston in stock bore size. Contact us for a quote ben.ballard@jbsracing.co.uk
108mm Piston
Originally developed for the JSB Racing 735cc Husaberg this piston has been successfully fitted to an LC4 engine in Finland for use in the Ice Racing championships. See our Husaberg Shop or contact us for more information ben.ballard@jbsracing.co.uk
Seriously free gaskets, JBS Racing have suppliers that can reproduce any gasket to the same standard as OEM gaskets at a much lower cost. We do not currently have a full set of KTM LC4 gaskets for use as a pattern. We are interested in the old LC4 engine and especially the newer engine currently being used in Sidecarcross. If you can provide us a with a FULL set of new or used gaskets that are in good enough condition to use a template for making new ones we will give you 3 complete gasket sets for free in return! Obviously this is first come first serve as once we have the pattern we’ll sell them.
Husqvarna 570 / 610
Pistons
98/99mm Pistons
High quality aftermarket forged pistons. JBS Racing are also interested to talk to anyone that would like to try putting a larger piston in a Husqvarna we have a large stock of 100mm+ pistons and would be happy to help a team develop a big-bore Husky. Talk to us at ben.ballard@jbsracing.co.uk
Seriously free gaskets, JBS Racing have suppliers that can reproduce any gasket to the same standard as OEM gaskets at a much lower cost. We do not currently have a full set of Husqvarna gaskets for use as a pattern. If you can provide us a with a FULL set of new or used gaskets that are in good enough condition to use a template for making new ones we will give you 3 complete gasket sets for free in return! Obviously this is first come first serve as once we have the pattern we’ll sell them.
Honda XR650
100mm/102mm Pistons
After market forged pistons for the XR650 engine in 100.00mm & 102.40mm bores. Available from a variety of suppliers that JBS Racing have accounts with. Contact us for a quote and for general advise on running an XR650 in a sidecar.
105mm
It is possible to adapt the JBS Racing 105mm piston to fit in the XR650, please contact us at ben.ballard@jbsracing.co.uk for more information.
Seriously free gaskets, JBS Racing have suppliers that can reproduce any gasket to the same standard as OEM gaskets at a much lower cost. We do not currently have a full set of XR650 gaskets for use as a pattern. If you can provide us a with a FULL set of new or used gaskets that are in good enough condition to use a template for making new ones we will give you 3 complete gasket sets for free in return! Obviously this is first come first serve as once we have the pattern we’ll sell them.
Honda CRF450
Piston
96/98/99mm Pistons
OEM stock bore and oversize pistons available to fit in the OEM barrel.
Available in a variety of compression ratios.
100mm Piston
Big-bore high-compression version of the above piston available. Can be problematic in the OEM cylinder see the kit below for the solution
Seriously free gaskets, JBS Racing have suppliers that can reproduce any gasket to the same standard as OEM gaskets at a much lower cost. We do not currently have a full set of CRF450 gaskets for use as a pattern. If you can provide us a with a FULL set of new or used gaskets that are in good enough condition to use a template for making new ones we will give you 3 complete gasket sets for free in return! Obviously this is first come first serve as once we have the pattern we’ll sell them.
If you need more power out of your CRF this is an excellent kit. It contains a 101.00mm piston , a non-OEM thicker walled barrel casting of 101.00mm bore to match the piston and all the gaskets and small parts necessary to fit the kit.
If you need to replace the crankshaft on your CRF you could do no better than this excellent aftermarket crankshaft from Wiseco. Shown below with the barrel, cam and spring kit also available. This crankshaft kit is such good value that it is worth considering replacing the whole crank when it comes time to replace the conrod! Contact ben.ballard@jbsracing.co.uk for more info.
Connecting Rod Kit
If you decided to replace the conrod alone JBS Racing can supply aftermarket conrods from exact OEM part copies (OEM supplier) Towa International, through to Wiseco stronger than stock parts right up to F1 quality Magna-flux tested guaranteed racing rods from Arrow Precision.
Titanium Valves
Forged Titanium valves are much stronger and more durable than their cheaper welded cousins. These valves are the very best quality and are CVD coated with proprietary anti-friction coatings for maximum performance and long life in race engines.
For instillation information for Titanium valves see - Install Info
JAWA
JBS Racing
work closely with a speedway tuning shop and racing team and can supply any
Jawa or GM speedway parts, including pistons, cranks and bottom end
components and head components. Additionally JBS Racing can supply tuning
parts for the Jawa 870 engine including pistons and gaskets. We would be
interested in hearing from any Sidecar teams that would like to increase the
capacity over the 707cc that the 100mm piston gives. There is a lot of
potential in this engine which is not being full realised at GP level
because of the small bore to stroke ratio, we feel. Contact us
ben.ballard@jbsracing.co.uk
For further information on the extensive range of
pistons that JBS Racing can supply see our
Tuning Shop -
Piston Library &
Billet Piston Info Also
see our Husaberg Shop and click the coming
soon link which will show you what we can do in terms of cases and internal
engine parts.
Additional Info for 4-Stroke Sidecars
With JBS Racings extensive experience in precision engineering and large well equipped workshop we can tackle any problem on a modern racing Sidecar.
For example -
Exhausts - Including calculating the primary tuned length and working to a multiple of that figure.
Crank re-balancing - for running with a different piston, with-out a counter-balancer or for chassis resonance tuning.
Oil Coolers - For any bike not just Husaberg.
Data Logging - Data logging has been an essential part of all forms of high end motorsport such as F1 and MotoGP for 25 years. With the advent of miniaturised electronics, GPS and solid-state accelerometers and gyros this technology has filtered down to sports such as WRC and Go-Cart. In recent years MX teams in the USA have started making extensive use of the technology.
Data logging would revolutionise Sidecarcross if teams would embrace it. It would help improve engine reliability massively by answering questions such as -
How long had the engine run for?
What was its RPM profile, average, max and at failure?
What were the water and oil temperature profiles, as above?
What was the oil pressure?
What was the HP profile, as above?
It also tells you a huge amount about set-up of the bike and is very easy to use. It would tell you -
Maximum cornering, accelerating and braking forces. Bigger being better / faster, and from this you can see is a tyre, suspension setting etc is helping or harming your lap time.
How much the rear wheel was slipping, helping you choose the right tyre and gearing.
It tells you about your riding style as well answering questions like -
Automatic lap timing and track mapping via
GPS & IRU?
What line you take on the track?
Your best theoretical lap if you took your best line on every corner?
With this system you can run a bike all day at the track with out even looking at it and then when you get home analyse the data or with a small laptop you can do live analysis at the GP. The system cost is £500-600 GBP which is relatively cheap considering that a single engine failure could cost 5 times that and this will help eliminate failures.
