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Illustrative image. The product may show variations.
Illustrative image. The product may show variations.
ALPHA RACING Valve Spring Kit V4.3 for S 1000 RR 09-18 / HP4 Race
Weight-optimized valve spring kit
8 inlet springs with +5% spring rate (+0.1 mm wire diameter)
8 outlet springs
16 inlet and outlet steel retainers, weight-optimized with optimized surface treatment
16 short valve shaft seals
Speed tested up to 14,500 rpm
Weight: 0.620 kg
When installing in S 1000 RR engines from model year 2015, the lower spring plates (BMW Motorrad OEM, ref. 11347713821) must be used on the exhaust side.