Description: Propel Pearl Coverstock: Propel Pearl is an evolutionary coverstock developed by Brunswick to improve the mid-lane and backend traction of the ball on today's slicker oils and lane surfaces. The Propel Pearl coverstock was discovered through testing of new formulation additives and process changes in coverstock manufacturing.
MACE Core: Mechanical Asymmetric Core Engineering. The MACE core has three major benefits: ultra-low RG core system to engage the Propel Pearl coverstock, high RG differential to aid in traction through heavy oil and high RG asymmetric differential to quicken the response time to friction. Designed as a two-component elliptical core system, the MACE core is dynamically the strongest asymmetric core ever produced for a Brunswick ball.
Ball Motion: The Evil Siege unites the Propel Pearl coverstock and the proven MACE core to produce a ball motion that is strong in the mid-land and aggressive on the backend. The Evil Siege is the ball when your game needs help battling medium to oily conditions and poor pin action.
Reaction Setup: The Evil Siege can be drilled using the standard drilling techniques developed for asymmetric bowling balls.
Lightweight Engineering: The unique core shape of each Brunswick ball is used for weights from 14 to 16 pounds. This approach to lightweight ball engineering provides bowlers with consistent ball reaction characteristics across the weight range. The same drilling instructions can be used for 12- and 13-pound balls. This is because Brunswick uses a generic core shape with an RG difference that is close enough to the 14-16 pound shape.

Ball Specs
Coverstock: Propel Pearl Colour: Black / Red Pearl.
Factory Finish: 4000
Weight Block: MACE Two-component Asymmetrical Core
RG max: 2.530
RG int: 2.500
RG min: 2.474
RG diff: 0.056
RG asym: 0.030
Average RG: 2.8 of 10
Hook Potential: 170 (Scale 10-175)
Length: 110 (Scale 25-235)
Typical Breakpoint Shape: 90 Angular (Scale Smooth Arc 10-Angular 100)
Flare Potential: 0.056 High (Scale Low 0.00-High 0.060)

Available Weights: 14lbs