Lamspeed Racing H13 Street Series Headstuds for the GR Corolla 2023+

Lamspeed Racing H13 Street Series Headstuds for the G16E-GTS GR Corolla 2023+

Turning up the boost?! Ensure you keep th head from lifting by utilizing these H13 Street Series Headstuds For applications where you have turned the boost right up over 30psi.

This is the first thing that occured to Lamspeed Racing when pushing the limits of their GR Yaris from when they set the World Record in their GR Yaris running a 10.5 @ 131mph to then setting the GR Yaris record around Sydney Motorsport Park at the 2022 World Time Attack Challenge with a 1.36.8

Lamspeed are the first to develop and put into production an aftermarket head stud solution by taking their own measurements to ensure the studs are of the correct length so that they bottom out on the block, the factory bolts do not. 

These H13 tool steel headstuds are manufactured specifically for Lamspeed and are much stronger than the typical 8740 chromoly.

Conventional washers are only 23-24mm OD, whereas Lamspeed's new oversize washers are designed to encompass the entire head bolt boss. CNC machined from 4140 chrome moly bar stock, hardened to HRC 45 and blackened for appearance.

Street Series do not included the hex broach like the Pro Series to reduce cost and will suit majority of the market.

What makes Lamspeeds headstuds better than the competition?
- The dogpoint feature seats the stud in the blockand preloads the fastener for a more accurate and repeatable torque sequence. We also include the ARP ultra torque assembly lube with each set. Worhen it comes to headstud perfmance properly torquing the studs is paramount and we have made every effort to ensure torque precision and repeatability.
- Direct OEM replacement, no modifications.
- Made in Australia, beware of cheap immitations!
- Instructions are included.