Motiv · ball specs

Motiv Aspire specs

The Motiv Aspire is a polyester (plastic) ball with the Tyro™ core. Here are its published specs, how they compare with the other current balls in our table, and what the numbers mean on the lane.

Disclosure: this page has affiliate links. If you buy through them, we may earn a commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. How this works.

Coverstock	Polyester
Cover type	Polyester
Core (weight block)	Tyro™
Core type	Not stated
RG	2.750
Differential	0.028
Factory finish	6000 Grit LSP
Flare potential (maker)	1"+
Maker's category	Spare
Colors	Navy/Red/Blue, Sky Blue/Silver/White, Purple/Silver/Black, Black/Red/Gold
Weights	8, 9, 10, 11, 12, 13, 14, 15
Release date (maker)	Available 8/13/2025

Numbers as Motiv publishes them, checked 21 October 2026. Published for a 15-pound ball. Drilling changes how a ball behaves, so a pro shop's layout matters as much as these numbers.

Find the Aspire on Amazon → Compare with another ball Add to my arsenal

What the numbers mean

Polyester cover. Polyester (plastic) is the cover used for spare balls and house balls: it grips the lane least, so the ball goes nearly straight. See our plastic spare ball review.

USBC allows an RG from 2.447 to 2.813 inches and a differential of at most 0.060 inches (Equipment Specifications Manual, March 2026). Our ball spec table lists every current ball we track, and who makes bowling balls covers which company owns Motiv.

Balls with similar numbers

Same cover type, closest RG and differential in our table:

Storm Clear Storm Teal: RG 2.800, differential 0.020
Storm Storm Norm Duke Clear: RG 2.800, differential 0.018
Storm Ice Storm Black-White-Gold: RG 2.720, differential 0.005
Roto Grip RG Jester Clear Polyester: RG 2.690, differential 0.006

Sources: Motiv product page; Storm, "Inside The Bowling Ball"; Storm, "The Coverstock"; USBC Equipment Specifications Manual.