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Hot Cams Shimsa rätt, ge järnet
Ventilshims, ventiler och kamkedjor som får din motocross- eller endurofyrtaktare att sjunga.
01Founded 2001, USA
02Four-stroke valvetrain specialist
03Laser-etched steel valve shims
04Cam chains to OEM spec
05Motocross and enduro focus
Motocross · EnduroHot Cams started in 2001 with a simple promise: serious four-stroke performance without a machine shop. The crew that made drop-in cams a paddock staple also perfected the part every mechanic touches most, the humble valve shim. Walk through any motocross or enduro pit and odds are a Hot Cams shim case is sitting open next to the feeler gauges.
The range we carry deepest reaches well beyond the cylinder head, into the parts that rebuild a tired bottom end. Sister-brand Hot Rods crank assemblies and main bearing kits cover small-bore minis like the 65, 85 and 100 classes right up to full-size enduro engines, while Hot Cams cam chains, made to meet or beat OEM spec, keep the timing honest on machines such as the KX250F, KX450F, WR250F and the KTM 450 four-strokes.
Rounding out the valvetrain you get the shims themselves, both single-size refill packs and full assortment kits, plus fresh steel and titanium valves for a head that has seen better days. Measure, shim, button it up, go ride.
Frequently asked questions about Hot Cams
Which shims should I choose, refill packs or a full kit?
It depends how often you adjust clearances. The single-size refill packs hold five shims of one thickness, ideal when you know exactly which size your feeler gauge calls for. A full Shims kit gathers a wide range in one tray, from roughly 1.20mm up, so you can dial in a head without waiting on an order. Many workshops keep a kit on the bench and top up with refills.
Can I build a complete bottom-end rebuild kit?
Yes. The range is built to do exactly that. Hot Rods crank assemblies form the core, sized for everything from 65 and 85 minis to larger enduro engines, and you can pair them with matching main bearing kits and gearbox bearing kits. Add a Hot Cams cam chain to refresh the timing side and you have most of an engine refresh in one go. Your dealer confirms the right fitment for your exact model and year.
Steel or titanium valves, what is the difference?
Both restore a worn head to healthy compression. Steel valves are the dependable, value-focused choice for most rebuilds and stand up well to everyday riding. Titanium valves are lighter, which suits high-revving race engines that were originally fitted with titanium from the factory. Match the valve material to what your engine left the factory with, and your dealer can verify this for you.
How do I buy Hot Cams via Knobby?
Knobby sells through dealers, not directly to consumers. Your local dealer can order from the full Hot Cams range, including shims, cam chains, valves and Hot Rods bottom-end parts, and will confirm the correct fitment for your model and year, check sizes and stock, and give you current prices before the parts go on order.
