engine parts and accessories

Originally designed to space back the reed valve block, unmasking the boost port on YPVS engines. Subsequent uses are lengthening the intake tract adding low and mid range performance. Standard and custom thicknesses are available 

Designed to help remove mid range flat spots in the power curve and boost performance. Alloy construction

When removing the stock airbox and replacing with individual race foam filters, these billet alloy manifolds and foam filter set are the perfect solution for standard carbs.

For YPVS and LC  supplied ready for you to fit to your primary gear.

Fitting service available, please ask

Take the additional lash out of the clutch basket/primary gear with these high performance clutch cush rubbers

Bolt on conversion to the stock LC side casing allowing you to run much stronger clutch springs whilst having a smooth easy clutch lever pull. Comes with new pushrod. Numerous master cylinder options depending on requirements. Master Cylinders are extra

Billet Alloy replacement for standard cover but with the addition of a drain hole to help when draining the coolant system. Made from 6082T6 Aerospace alloy, stainless fixings

Thicker cover with Cooling fins to reduce water temperature. Does not fit under plastic cover

Use when removing the two stroke oil pump to blank off the hole left 

Available for:

RD250/350LC & YPVS

RD500YPVS

YOUR Flywheel, lightened to road or race spec. 

Offset Woodruff Key to Advance (or retard) the timing of the RD350YPVS by approx 4 degrees. Instant horsepower throughout the entire rev range.

To remove the flywheel from the crank taper M27x1.00LHT

Stainless steel and thicker to remove additional end float from the powervalve spools. Available for

RD500YPVS, TDR/TZR250. 350 is out of stock currently

The Original High Temp silicone O rings for the YPVS Bushes. 

Available for:

RD350YPVS , RD500YPVS,TDR/TZR250

Stainless Steel, Heavy duty for Spring retained manifolds

Stainless Steel, TIG welded, with cold formed 4mm rolled ends, all hand made

Offset Sprockets to help in chain alignment. 17T 520 chain

4.5mm offset and 9mm offset from stock.

Made to order machined from 7075T651 Blanks to suit whatever bolt pattern and lighteneing rtequirments you have

Alloy Kickstarter mated to YOUR spline. 

New Splines can be supplied if required for £30+Vat

New splines are currently unavailable

To Torque down the notoriouslt difficult to reach Cylinder base stud nuts on the RD YPVS series engines, suitable for 12mm and 14mm nuts

Billet Alloy Oil Filler Cap in Silver

To remove the springs retaining the exhausts whilst not losing skin or burning yourself