Radical The Spy Bowling Ball
$179.99 Original price was: $179.99.$104.95Current price is: $104.95.
SKU: Radical-Spy
Categories: Asymmetrical Core Bowling Balls, Bowling Balls, Bowling Deals, Entry Level Bowling Balls, Radical, Radical Bowling Balls
Tags: .053 Diff, 2.51 RG
What should I know about the The Spy?
Asymmetric Spy Core with DynamiCore for a defined, controllable move
Textured Polyester cover for control with a touch of real hook
A unique specialty ball that bridges a plastic spare and a controllable reactive
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Description
A Textured Polyester With a Surprising, Controllable Hook
About the The Spy
The Radical The Spy is a one-of-a-kind specialty ball that pairs a polyester cover with a real asymmetric core. It combines the asymmetric Spy Core with a Textured Polyester coverstock, so it goes straighter and reads later than a reactive ball, but the strong asymmetric core gives it a surprising, controllable hook at the backend. It is the spare ball that does more than go straight.
The Spy is built for bowlers who want a predictable, controllable shape on dry lanes. Polyester reads the lane gently and resists the oil, but the textured surface and asymmetric Spy core add a defined, controllable move that a plain plastic ball cannot make. The result is a durable, affordable ball that holds a true line with a little extra motion when you need it.
Understanding the Radical Spy Asymmetric Core and Radical Textured Polyester
Radical built The Spy to combine polyester control with a real asymmetric hook. Specifically, the asymmetric Spy Core posts a 2.513 RG, a .053 differential, and a .017 intermediate differential, numbers that give the ball a defined breakpoint for a polyester ball, while the Textured Polyester cover reads the lane gently and resists the oil. As a result, it holds a controllable line with a surprising, predictable move at the backend. The per-weight specifications are listed below.
An Asymmetric Core That Adds a Defined Move to a Polyester Ball
At the heart of The Spy is the asymmetric Spy Core. At 15 lb it measures a 2.513 RG, a .053 differential, and a .017 intermediate differential, numbers that are genuinely strong for a ball with a polyester cover. The asymmetric core adds a defined, controllable breakpoint that a simple plastic spare ball cannot produce.
Radical wraps the Spy core in DynamiCore for added durability and a stronger hitting ball. Because the core is asymmetric, layout has an influence on the reaction, so your pro shop can tune how much motion The Spy makes. The result is a unique ball: polyester control with a touch of real, controllable hook.
A Textured Polyester Cover for Control With a Touch of Motion
The Spy is finished with a Textured Polyester coverstock at a 500, 1000 Siaair finish with factory compound and polish. Polyester generates far less friction than reactive resin, so The Spy reads the lane gently and holds a controlled line, but the textured surface adds just enough grip to let the asymmetric core make its move.
That blend of polyester control and a textured surface is what makes The Spy so unusual: it goes straighter and more predictably than a reactive ball, but it can make a defined, controllable move at the backend. Take the surface down for a bit more grip, or smooth it up for a straighter reaction, with surface changes done at your pro shop.
The Spy Specs
| Weight | Radius of Gyration (RG) | Differential | Mass Bias |
|---|---|---|---|
| 16 lbs | 2.523 | .046 | .015 |
| 15 lbs | 2.513 | .053 | .017 |
| 14 lbs | 2.530 | .053 | .017 |
RG and differential vary by weight. Specifications provided by the manufacturer.
Who This Ball Is Right For
✓Control Players: A polyester ball with a controllable, defined move for dry lanes and predictable shotmaking
✓Spare Shooters Who Want More: A straighter-than-reactive ball that can still make a controllable move when you need it
✓Straight Players: A durable polyester reaction with a touch of real hook, tunable at the surface
✓Arsenal Builders: A unique specialty piece that bridges a plastic spare ball and a controllable reactive
Good to Know Before You Buy
·Control over raw hook: The lower differential means moderate total hook. For maximum board coverage on heavy oil, step up to stronger equipment.
·Ships polished: The 500, 1000 Siaair / Factory Compound / Polish finish runs clean and long out of the box. For an earlier read on heavier oil, take the surface down at your pro shop.
·Asymmetric layout sensitivity: Layout choices shift the reaction more than on a symmetric ball. Match the pin and mass bias to your game with your pro shop.
·Sold undrilled: Ships without finger holes, so it can be fitted to your hand and span.
BowlersMart Tips: Where The Spy Fits in Your Radical Arsenal
Where It Fits in Your Arsenal
In the Radical lineup, The Spy is a unique specialty ball: a textured polyester with a real asymmetric core. Where a plain plastic ball goes dead straight, The Spy holds a controllable line but can make a defined move at the backend, so it is the ball you reach for on dry lanes when you want predictability with a touch of motion. It pairs with your reactive Radical balls as a control and specialty option.
Surface Adjustments
The 500, 1000 Siaair finish gives The Spy its controlled polyester read with a touch of grip. Take the surface down for a bit more motion, or smooth and polish it up for a straighter reaction. Have surface changes done at your pro shop for an even, consistent finish.
Coverstock Care
Wipe the textured polyester cover with an approved ball cleaner after every session. Polyester is durable and low-maintenance, so a quick wipe keeps The Spy reading the same predictable way for years.
Earn points on every Radical purchase through the Striking Rewards loyalty program. Every ball you add to your arsenal builds toward your next reward.
Shop With Confidence at BowlersMart
The Radical The Spy Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Radical dealer, every ball is genuine and covered by the full one-year Radical warranty. Place your order before 2 PM EST and it ships the same day.
Additional information
| Weight | 15 lbs |
|---|---|
| Dimensions | 9 × 9 × 9 in |
| Brand | |
| Bowling Ball Core Shape | |
| Bowling Ball Core Name | |
| Bowling Ball Coverstock Type | |
| Bowling Ball Cover Name | |
| Radius of Gyration: RG (15LB) | |
| Differential: Diff (15LB) | |
| Mass Bias Strength | |
| Flare Potential | |
| Surface Finish | |
| Preferred Lane Conditions | |
| Ball Weight | |
| Bowling Ball Color | |
| Ball Performance Level | Entry Level Novice Bowling Balls, Radical Plastic Bowling Balls |
| Scent |
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Everyday Free Shipping

Place your order before 2PM EST Monday - Friday (excluding holidays) and your order will ship out same day for in stock and available products. In stock items will ship out the following weekday if purchased after 2PM EST.
In stock Items may take 3-5 business days to arrive depending on your location. (2-10 days in AK, HI, PR, GU, APO, FPO).
We use USPS Priority Mail, Parcel Post, UPS and FedEx as our methods of shipping. Ground Shipping is ALWAYS free in the USA (except Alaska, Hawaii, Puerto Rico, Guam, and APO / FPO addresses), no matter how many items you order, no matter the weight, no matter the distance!
International Shipping - Duties, & Taxes & Return Information
Duties & Taxes - If shipping international, duties and taxes will need to be paid locally. BowlersMart.com is not responsible for any local duties or tax fees.Returns - We gladly ship worldwide, but please note that international customers are responsible for all return shipping and handling costs. If you wish to return your order, you must cover all shipping fees, duties, and any additional charges incurred. We recommend using a trackable shipping method to ensure your return reaches us safely. For more details, please review our full return policy or contact our customer support team.
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WARNING:
This product can expose you to chemicals including Lead, Phthalates, and/or other chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.



