FANTASY FLASH SALE

Save $30 on Losi NASCAR Fantasy vehicles!

SHIFT INTO OVERDRIVE

Full Throttle Rewards | VIP perks, exclusive deals & more

NEW & IN STOCK

Available now and ready to ship

FANTASY FLASH SALE

Save $30 on Losi NASCAR Fantasy vehicles!

SHIFT INTO OVERDRIVE

Full Throttle Rewards | VIP perks, exclusive deals & more

NEW & IN STOCK

Available now and ready to ship

Next Shipment August 2026

OS Engines Valve Spring: GF40

OS Engines - OSMG9238

$8.99

Earn Full Throttle Rewards With Every Purchase. Learn More.

OS Engines Valve Spring: GF40 Product Specs

Manufacturer #49460200