Swag Mad Joker Bowling Ball
SKU: SWA-MAD-JOK
Categories: Bowling Ball Archives, SWAG Bowling Ball Archives
What should I know about the Mad Joker?
•Symmetric Grinder V2 Core
•UP1 Hybrid Reactive cover at 4000 Grit
•Built for medium to heavy oil
Description
A Symmetric Hybrid for Medium to Heavy Oil
About the Mad Joker
The Swag Mad Joker Bowling Ball is a high-performance symmetric hybrid built for medium to heavy oil. It pairs the symmetric Grinder V2 Core with the UP1 Hybrid Reactive coverstock at a 4000 Grit finish for 4 to 5 inches of flare.
A symmetric core and a hybrid cover give the Swag Mad Joker a smooth, readable, continuous motion through the midlane and into the pocket.
Understanding the Swag Grinder V2 Core and Swag UP1 Hybrid Reactive
The Swag Mad Joker pairs the Grinder V2 Core with the UP1 Hybrid Reactive to deliver a controllable, repeatable reaction on medium to heavy oil.
The symmetric Grinder V2 Core
At 15 pounds the Grinder V2 Core measures a 2.51 RG and a .050 differential, numbers that produce a smooth, even roll with medium flare.
The UP1 Hybrid Reactive
The UP1 Hybrid Reactive at a 4000 Grit finish blends clean length with an even, controllable midlane read.
Mad Joker Specs
| Weight | Radius of Gyration (RG) | Differential |
|---|---|---|
| 15 lbs | 2.51 | .050 |
RG and differential vary by weight. Specifications provided by the manufacturer.
Who This Ball Is Right For
✓All-style players: The symmetric core suits bowlers who want a smooth, predictable shape on medium to heavy oil.
✓Medium to heavy oil: Built to handle medium to heavy oil.
✓Arsenal builders: A high-performance option for the Swag bag.
Good to Know Before You Buy
·Ships at a clean box finish: The 4000 Grit finish is a smooth, sanded surface that still gets down the lane. Take it lower for an earlier read on heavier oil, or polish it up for more length.
·Colors vary: Actual colors vary somewhat from the photos shown; no two balls come out of the mold exactly alike.
·Tiny pit holes are normal: A few tiny pit holes in the coverstock are a normal part of the manufacturing process.
·Sold undrilled: Ships without finger holes, so it can be fitted to your hand and span.
BowlersMart Tips: Where the Swag Mad Joker Fits
Where It Fits in Your Arsenal
The Swag Mad Joker slots in as a symmetric hybrid for medium to heavy oil. Pair it with a stronger solid for heavier volume and a cleaner pearl as the lanes transition.
Surface Adjustments
The 4000 Grit finish sets the ball’s length and read. Your pro shop can adjust the surface to move the reaction earlier or later.
Coverstock Care
Clean the cover after every session to keep the UP1 Hybrid Reactive responding like new.
Earn points on every Swag 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 Swag Mad Joker Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Swag dealer, every ball is genuine and covered by the full one-year Swag warranty. Place your order before 2 PM EST and it ships the same day.
Additional information
| Weight | 15 lbs |
|---|---|
| Dimensions | 10 × 10 × 10 in |
| Brand | |
| Bowling Ball Coverstock Type | |
| Bowling Ball Cover Name | |
| Bowling Ball Core Name | |
| Bowling Ball Core Shape | |
| Radius of Gyration: RG (15LB) | |
| Differential: Diff (15LB) | |
| Mass Bias Strength | |
| Flare Potential | |
| Surface Finish | |
| Scent | |
| Preferred Lane Conditions | |
| Ball Performance Level | |
| Bowling Ball Color | |
| Ball Weight |
Reviews
Reviews
Q&A
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.



