Uprated Valve Spring + Retainer Kit CATCAMS BMW M30B35 - 12 Valves

This uprated valve spring kit from CATCAMS comprises 12 springs and 12 retainers.

Technical specifications

• Spring type: dual valve springs
• Outer spring, outside diameter: 30.7 mm
• Outer spring, inside diameter: 23.1 mm
• Inner spring, outside diameter: 23.2 mm
• Inner spring, inside diameter: 17.4 mm
• Spring rate: see below
• Retainer material: hardened steel
• References: PAC-D95009 (dual springs) + CATCAMS 99326 (retainers)

BMW M30B35 engine applications:

• BMW E24 635CSi (1988-1989) - 211-218 hp
• BMW E28 535i / M535i (1985-1987) - 218 hp
• BMW E32 735i (1989-1992) - 211 hp
• BMW E34 535i (1988-1993) - 211-218 hp
• Rayton Fissore Magnum 3.5 (1988-1989)

Inner spring specifications :

Outer spring specifications :

CATCAMS expertise in camshafts and their accessories (valve springs, mechanical lifters, adjustable pulleys and more) has been recognised worldwide for many years, built on craftsmanship and precise study of engines and applications. Every camshaft profile and spring rate has been developed according to the specific features of each engine and to its intended use (road, sport, rally, drag, circuit and more).

Depending on the model, Catcams spring retainers are made of steel or aluminium.

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