Norton 750 / 850 Chrome Silicon valve spring setThis spring set from Kibblewhite is an OEM replacement for Norton 750 850 heads from 1966 1972, and 750 heads from 1968 1977. As always, spring pressure should be checked and verified on each head. This set consists of 4pc outer springs and 4pc inner springs. Seat pressure is 68# @ recommended installed height 1. 280". Maximum recommended valve lift is . 410". These springs are much higher quality than the current UK production and are made in USA.

This eliminates the hassle of having to balance the pistons yourself

This Hepolite kit includes everything you need to take your 750 cylinder to the next size

Hylomar product overview click here

including 5TA

Bonneville or TR7

Since MCM closed their doors decades ago

Fits all 376 and 389 series Monobloc carbs

We stock two brands of these: USA made Mahle/Clevite Tri-metal bearings

These pre unit rocker box gaskets replace Triumph part # 70-3552 or E3552

They have a 2

626 carbs only

Each ring is inspected before shipping to guarantee you will not receive a defective ring