Spank 350 Vibrocore Rear Wheel - Not Applicable - 12x148mm Boost - 6 Bolt - Rear - 29 Inch YGroup_7033804685357 it won't harm rubber o-rings

it won't harm rubber o-rings or metal surfaces either

OneUp has not had cause to recommend replacing them yet

Cons: They are slightly heavier than a plastic option

you don't have to use all these spacers

Spank 350 Vibrocore Rear Wheel - Not Applicable - 12x148mm Boost - 6 Bolt - Rear - 29 Inch YGroup_7033804685357 it won't harm rubber o-ringsIf you are looking for a bombproof DH World Cup proven rear wheel, look no further than the Spank 350 Vibrocore. Spank's radial compliant design offers better traction and reduces wheel deflection and negative feedback, which is super important when you are pinning it through rock gardens. The wheels feature Spanks Vibrocore technology which acts as a vibration dampener, reducing arm fatigue for the rider and increasing the strength of the rim. These