For use in 1275 and larger engines. Although we have used these in 998's. Massive improvements in mid range torque and power, especially when used with say a GT7 head and twin HS4's Kind on valve gear due to base circle design, better than 286
Piper Vernier Duplex kit. Superb quality with total adjustment for exact camshaft timing. Kit includes large and small steel sprockets,competition quality duplex chain and 2 CSK front plate screws.