Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Check vehicle fitment
Stomski Racing
SR02
Product Information

To ensure the utmost in timing precision, the true TDC of all engines should be checked to confirm the accuracy of the pulley TDC mark in relation to the real TDC. This tool screws into the spark plug hole and gives a mechanical indication of where the piston is in relation to the pulley/crankshaft. By rotating the crankshaft and touching/bumping the piston against the dead stop BTDC, and then rotating the engine in the opposite direction and touching/bumping the piston again against the dead stop ATDC, recording both measurements on a degree wheel, the pulley, or our DigiDix- SR095, you can calculate pure TDC.
Available for either 12mm or 14mm spark plug holes.
Sold separately.
Product Information
TDC indicators for Porsche 911
To ensure the utmost in timing precision, the true TDC of all engines should be checked to confirm the accuracy of the pulley TDC mark in relation to the real TDC. This tool screws into the spark plug hole and gives a mechanical indication of where the piston is in relation to the pulley/crankshaft. By rotating the crankshaft and touching/bumping the piston against the dead stop BTDC, and then rotating the engine in the opposite direction and touching/bumping the piston again against the dead stop ATDC, recording both measurements on a degree wheel, the pulley, or our DigiDix- SR095, you can calculate pure TDC.
Available for either 12mm or 14mm spark plug holes.
Sold separately.
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Choose Size:
Prices from: €163.61