SKU: WEHWM104
MPN: WM104
The WEHRS MACHINE WM104 is a 25-pound rectangle bar lead mold built for circle track racers who pour their own ballast weight. This is not a bullet mold despite what some catalog listings suggest. It forms a solid lead bar sized to bolt directly to standard weight clamps using 5-inch on-center bolt spacing. Racers running asphalt or dirt who need to dial in chassis weight will get repeatable, full-size ballast bars every pour. The design is inspired by Ryan Rosenow's setup and is made in the USA. If you maintain your own weight inventory rather than buying pre-cast bars, this mold pays for itself fast.
The mold measures 12 inches by 3-1/2 inches by 1-1/2 inches and produces a finished 25-pound lead bar. A built-in taper runs the length of the cavity so the bar drops free once the lead cools, which keeps you from prying or hammering on a hot mold. The 5-inch on-center bolt spacing matches common weight clamp hardware, so a bar poured here mounts to the chassis without drilling or modification. The bar geometry is rectangular and flat, which stacks cleanly when you carry spare weight to the track. It pairs well with other shop fabrication and fluid-handling gear in our racing tools lineup, including pouring funnels and pit-side storage.
Use the WM104 when you want to control your own ballast supply and pour bars from reclaimed wheel weights or scrap lead. Racers who frequently adjust weight placement during a season save money casting in-house versus buying finished bars one at a time. Set the mold on a level surface, pour, let it cool fully, and the taper releases the finished 25-pound bar. Keep a few spare bars staged so you can shift weight between practice and qualifying. Browse the rest of our shop equipment and storage options to round out your pit setup.
No. Despite some catalog titles, the WM104 is a ballast mold for circle track racing. It pours a 25-pound rectangular lead bar that bolts to chassis weight clamps. It is not designed for casting projectiles or reloading components.
The cast bar uses 5-inch on-center bolt spacing, which matches standard weight clamp hardware. Once the bar cools and releases from the mold, it bolts directly to the chassis without drilling or additional modification.
The mold casts a finished 25-pound lead bar measuring roughly 12 inches by 3-1/2 inches by 1-1/2 inches. The rectangular, flat shape stacks cleanly for transport and storage between race weekends.
A built-in taper runs the length of the cavity. After the poured lead cools fully, the taper lets the bar drop free without prying or hammering, which protects the mold and keeps the bar's edges intact.
The WM104 is manufactured by WEHRS MACHINE in the USA. The design is inspired by Ryan Rosenow's setup and is built for racers who cast their own ballast from scrap or reclaimed lead.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
