Spitfire
Spitfire F4 Grimple Stix Lock-In Full 55mm 99D Skateboard Wheels - Black
Spitfire F4 Grimple Stix Lock-In Full 55mm 99D Skateboard Wheels - Black
Push your limits with the Spitfire Formula Four Grimple Stix Lock-In Full 55mm 99D Wheels in Black — a perfect fusion of style, speed, and control.
Online Store
Mornington Store
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About this product
About this product
Spitfire F4 Grimple Stix Lock-In Full 55mm 99D Skateboard Wheels – Black
Push your limits with the Spitfire Formula Four Grimple Stix Lock-In Full 55mm 99D Wheels in Black — a perfect fusion of style, speed, and control. Engineered with Spitfire’s industry-leading Formula Four urethane, these wheels deliver superior performance, insane durability, and zero flat spots, even under the heaviest sessions.
The Lock-In Full shape features a slightly conical design with a flat inside edge for extra stability on ledges, rails, and coping. Paired with a 99D durometer, these wheels strike the perfect balance between smooth slides and reliable grip — making them ideal for all-around street and park skating. Finished with exclusive Grimple Stix artwork, they bring attitude, precision, and pro-level consistency to every session.
Whether you’re locking into grinds or flying down transitions, the Spitfire Grimple Stix Lock-Ins keep you rolling fast, smooth, and in control.
Specifications
Size: 55mm
Durometer: 99D (Formula Four Urethane)
Shape: Lock-In Full – Flat inside edge for control & stability
Color: Black with Grimple Stix graphics
Features:
Formula Four urethane for speed & slide control
Flat-spot resistant and durable
Lock-in edge for secure grinds
Consistent feel across all surfaces
Shop Spitfire F4 Grimple Stix Lock-In Full 55mm 99D Wheels at Welcome Boardstore. Formula Four urethane, flat-spot resistance, and Grimple style in black.
Shipped within 24 hours
Shipped within 24 hours
Order by 12pm Mon-Fri to receive same-day DISPATCH
Order after 2pm and receive next business day DISPATCH.
Our full shipping policy can be found here
Free Returns & Exchanges
Free Returns & Exchanges
Free returns are granted if you receive an item that is faulty, or is not as described.
We do not cover return fees if you change your mind or order incorrectly.
We only accept returns to us within 14 days of date of receiving, in the condition that you received it and we will happily exchange it or issue a refund. *Conditions Apply.
PLEASE NOTE: Sale items are offered at significantly discounted prices so please choose carefully as we WILL NOT offer exchanges or returns on sale items.
Full return policy can be found here
Happiness Guarantee
Happiness Guarantee
We want you to be happy with the product you buy, so all our products offer a 12-month repair and replacement warranty for factory defects or manufacturing errors.
All warranty claims and repairs must only be assessed by the manufacturer and/or manufacturer's representative and will be repaired, replaced, or credited at their discretion excluding any shipping fees.
A valid proof of purchase will be required for all warranty claims.
Contact us on support@welcomeboardstore.com.au or call 039781472 for more information.

About Spitfire
Spitfire is one of the most iconic and trusted skateboard wheel brands, known for its unmatched speed, durability, and performance. Founded in 1987 under Deluxe Distribution in San Francisco, California, Spitfire has been a favorite among skaters worldwide, offering high-quality urethane wheels designed for ultimate control and longevity.
With its legendary Formula Four (F4) urethane, Spitfire wheels provide superior grip, flatspot resistance, and smooth slides, making them the go-to choice for street, park, and transition skaters. Backed by a team of top professional skaters, Spitfire continues to push innovation while staying true to its raw, rebellious skate culture.
Fueled by the motto "Burn Forever," Spitfire remains a skateboarding staple, delivering premium wheels and accessories built for riders who demand the best.
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