SPRING & RETAINER KIT

Supertech Spring / Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring / Retainer kits are second to none in terms of performance, quality and value.

Specifications:

• Type: Dual Spring
• Press.Seat: 82lbs @ 41.00mm
• Press.Open: 182lbs @ 10mm
• Max Lift: 15.50mm
• Coil Bind: 25.50mm
• Rate: 10.00lbs/mm
• Retainer: RET-BM2521/T1S-LC
• Spring : SPR-2521-BM
• Seat Locator: SEAT-BMS54
• This kit is to be used with BMIVN-1040-LC, BMEVI-1040-LC and lash caps

• BMW M3 2001-2006
• BMW Z3 2001-2002
• BMW Z4 2006-2008

Black Nitrided Intake Valve

• Head Diam: 35.00mm
• Stem Diam: 5.97mm
• Length: 117.50mm
• Valve Type: Intake
• Material: Black Nitrided

Inconel Exhaust Valve

• Head Diam: 30.50mm
• Stem Diam: 5.95mm
• Length: 119.10mm
• Material: Inconel
• Valve Type: Exhaust

****NOTE: MUST BE USED WITH LC-60 LASH CAPS****