Valve train components

Valve train components

Prox is offering a wide range of steel and titanium engine valves as well as titanium into steel conversion kits. The ProX titanium valves are manufactured to high quality standards. high tech Ti3al alloy is forged in one-piece for extra strength while the material offers superior material properties at high temperatures the additional CrN coating offers extreme surface hardness and creates considerably lower friction. The ProX titanium valves do exceed OE specifications in dimensions and reliability.

The ProX steel valves are manufactured of premium grade steel to exact OEM specifications and tolerances. the steel valves are made by the leading OEM factories in Japan and are a direct and cost-efficient OEM replacement.

Valve & Spring Replacement Kits

Replace your titanium valves for steel valves! The ProX Titanium valve & spring kits are offered as an alternative where the OEM application uses titanium valves. Titanium is a very exotic material that requires a strict installing procedure to make it work well. The OEM Titanium valve quality in general is rather poor while high-end titanium valves are very expensive. Titanium valves need to be replaced at a regular base, resulting in many expensive rebuilds. The steel valves offer increased durability and easily extends 3 times the lifespan of the OEM Titanium valves. Due to the extra weight of the steel a heavier valve spring must be used! ProX has now developed the Steel Intake and Exhaust Valve & Spring Kits, containing a set of steel intake or exhaust valves plus a set of specially designed stronger valve springs. The ProX kit juts replaces the OEM valves & valve springs and can be installed using the OEM retainers, bases and valve seats.

Steel Valve & Spring Kit Features:

  • Steel valves for increased durability and less wear under extreme conditions
  • Nitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide
  • Special stronger valve springs deal with the extra weight of the steel valves
  • Spring are made from premium Chrome Vanadium Steel for higher performance and durability under high RPM
  • Fully rebuildable with OEM retainers, bases and seals without the need of any further engine modifications
  • Comes as complete package for quick, easy and cost efficient replacement
Steel valves

Steel valves

The ProX steel valves are manufactured of premium grade steel to exact OEM specifications and tolerances. the steel valves are made by the leading OEM factories in Japan and are a direct and cost-efficient OEM replacement.
Titanium valves

Titanium valves

The ProX titanium valves are manufactured to high quality standards. High tech Ti3al alloy is forged in one-piece for extra strength while the material offers superior material properties at high temperatures the additional CrN coating offers extreme surface hardness and creates considerably lower friction. The ProX titanium valves do exceed OE specifications in dimensions and reliability.
Valve stem seals

Valve stem seals

ProX offers a wide range of valve stem seals for the MX, Dirtbike, Roadbike and ATV segment. The seals are manufactured by the leading OEM factories in Japan such as NOK and ARS. The seals are produced from premium grade materials and are made to OEM specs and tolerances, offering low friction in combination with superior seal for excellent durability.
Valve shims

Valve shims

ProX valve shims are made of premium materials. Specific heat-treatment will ensure hardness of the shims to offer maximum durability and less wear. Next to the specific heat-treatment the shims are precision machined to match exact size. The ProX valve shims are available in complete assortment boxes as well as refill kits. Complete assortment boxes contain a full line of 7.48 mm or 9.48 mm shims for Japanese applications and 8.90 mm and 10.00 mm for KTM applications. Thicknesses range from 1.20 mm upto 3.50 mm. Incremental by 0.25 mm! For most models Japanese Dirt Bikes, Road Bikes and ATV’s and KTM applications, refill kits are available for each individual size and are packed per 5 pcs.
Cam chains

Cam chains

For the supply of the cam chains ProX has a successful cooperation with Borg Warner in Japan. Borg Warner is a leading name in the industry and is known as one of the main suppliers to a variety of OEM companies worldwide.

The quality is proven and the range of products is very wide. Since the cooperation between ProX and Borg Warner the product program has increased significantly and a complete line of cam chains for MX, ATV and Street Bikes is available from ready stock.
Camshafts

Camshafts

The ProX special "torque" camshafts are designed to bring better performance in the area that where you can really use it, the bottom-end and midrange. In average the ProX Hi-performance cams gain around 5% on horsepower and around the 4-5% of torque. Next to the extra power the Hi-performance cams will offer improved ride-ability and instant throttle response.

The camshafts are manufactured from high quality premium material. The use of dedicated forgings and precision machining will ensure high performance and maximum durability. The drop-in type cams come complete with high quality bearing and sprocket for easy installation without the need of further engine or head modifications.

ProX Hi-Performance camshaft features:

  • Manufactured from high quality premium material.
  • Specific heat-treatment to offer very high thermal fatigue resistance.
  • Precision machined and polished for reduced friction and maximum durability.
  • Special "torque" designs to increase bottom-end and midrange power.
  • Drop-in type camshafts without the need for further engine or head modifications.
  • All camshafts are dyno and field tested for proven results.
  • Camshafts will work with ProX as well as OEM valve train components.