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ATTRIBUTE INDEX

Bowling Balls by Differential

Differential measures how much the ball flares as it travels down the lane. Flare is the distance between successive oil rings on the ball after each rotation. Higher differential means more flare, more total ball motion, and a stronger backend reaction. The USBC limit is 0.060 for 15-pound balls.

By the BowlersMart Pro Shop Team. Last reviewed for the 2026 season.
AT A GLANCE
42
Differential values indexed
3
Tiers: Low / Med / High
15 lb
Reference weight
USBC
Approved specs
HOW TO READ DIFFERENTIAL

The 3 Differential Tiers

Each Differential value falls into one of three tiers. Knowing which tier you need narrows the search before you drill down to specific values.

LOW DIFFERENTIAL
0.006 to 0.030

Smooth, controlled reaction. Great for straighter players and dry lanes.

MEDIUM DIFFERENTIAL
0.031 to 0.045

Balanced reaction. Versatile for most lane conditions.

HIGH DIFFERENTIAL
0.046 and up

Strong, angular reaction. Built for heavy oil and rev-dominant players.

THE INDEX

All Differential Values (Low to High)

Click any Differential value to see every BowlersMart ball with that exact specification.

Jump to Low ↓Jump to Medium ↓Jump to High ↓
LOW DIFFERENTIAL (0.006 to 0.030)

Smooth, controlled reaction. Great for straighter players and dry lanes.

MEDIUM DIFFERENTIAL (0.031 to 0.045)

Balanced reaction. Versatile for most lane conditions.

HIGH DIFFERENTIAL (0.046 and up)

Strong, angular reaction. Built for heavy oil and rev-dominant players.

Other Core Attribute Indexes

ATTRIBUTE

By RG (Radius of Gyration)

Browse balls indexed by how early or late their core revs up.

Open RG index →

ATTRIBUTE

By Mass Bias Strength

Browse asymmetric balls indexed by how strong their backend break is.

Open MB index →

ATTRIBUTE

By Core Differential

Browse balls indexed by total flare and overall ball motion strength.

Open Differential index →

NEXT STEP

Know the Differential you want? Get fitted at a pro shop.

Picking the right Differential is one variable. Pairing it with the right layout for your PAP and rev rate is the next. Visit a BowlersMart pro shop for a certified fitting.