A proposal by Tony for the new oppdirt.com. Products and prices from the current store on 22 Oct 2026. Nothing here is for sale; buy buttons go nowhere.
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Dirt track racing parts · Rotterdam Junction, NY

Parts for the
weekend warrior and the pro

Wheels, brakes, springs, safety gear and engine parts from the brands racers run, plus the Manimal chassis built in our own shop.

Shop by brand The Manimal chassis
Wilwood Zamp WINTERS Wehrs Machine & Racing Products Bicknell DMI Rears Jones Racing Products Kirkey Racing Seats KEIZER Bilstein Swift Springs 2.5 Barrel FEL-PRO
Official supplierAmerican Racer tires and Sunoco race fuel at Fonda Speedway
Built in-houseThe Manimal Pro Stock chassis, from bare frame to race-ready
Racers behind the counterStop by the shop or ask about the right part
Online Performance Parts, oppdirt.com, by Stone Motorsports
oppdirt.com

We race
what we sell.

Online Performance Parts, by Stone Motorsports: the parts counter of the Manimal shop in Rotterdam Junction, and the parts on the cars we build and race.

Shop by brand

All 64 brands →
Wilwood1,145 products Zamp480 products WINTERS833 products Wehrs Machine & Racing Products714 products Bicknell112 products DMI Rears310 products Jones Racing Products232 products Kirkey Racing Seats46 products KEIZER11 products Bilstein52 products Swift Springs 2.5 Barrel39 products FEL-PRO882 products

The Manimal chassis

See them all →

Pro Stock chassis built in our shop, from the frame and tin to a full car with body and powder coat.

Manimal- Chassis and Powder Coat

Chassis and Powder Coat

$5,500.00
 Manimal - Chassis, Front/ Rear Firewall, Floor, Dash and Powder Coat

Chassis, Front/ Rear Firewall, Floor, Dash and Powder Coat

$6,500.00
 Manimal - Chassis All Interior/ Outer Tin and Powder Coat

Chassis All Interior/ Outer Tin and Powder Coat

$7,000.00
 Manimal - Chassis, All Interior/ Outer Tim, Roof, Quarter, Windows and Powder Coat

Chassis, All Interior/ Outer Tim, Roof, Quarter, Windows and Powder Coat

$7,500.00
 Manimal -Chassis, all Interior Tin, Body and Powder Coat

Chassis, all Interior Tin, Body and Powder Coat

$11,995.00

Keizer wheels

Shop Keizer →
Keizer Wheel W/ Mud Cover

Keizer Wheel W/ Mud Cover

$525.00
Mud Cover Jersey Style KW

Mud Cover Jersey Style KW

$130.00
Keizer Mud Cover

Keizer Mud Cover

$60.00
14" KEIZER 3 PIECE BEADLOCK WHEEL

14" KEIZER 3 PIECE BEADLOCK WHEEL

$430.00
Keizer Outer Half w/ Bead lock Ring

Keizer Outer Half w/ Bead lock Ring

$325.00
Keizer Vent Wheel Covers

Keizer Vent Wheel Covers

$75.00
Keizer Ring Tabs Forged

Keizer Ring Tabs Forged

$95.00
Keizer Forged Wide 5 Wheels

Keizer Forged Wide 5 Wheels

$475.00

Wear the team

Manimal Chassis Shirt →
Manimal Chassis Shirt

Manimal Chassis Shirt

$25.00
Online Performance Parts Winter Hat

Online Performance Parts Winter Hat

$25.00
Manimal/ Online Performance Shirts

Manimal/ Online Performance Shirts

From $15.00
A blue Manimal chassis with its body going on, in the shop
Visit the shop

1375 Main Street, Rotterdam Junction

Pick up parts, tires and race fuel, or talk over a Manimal build. Online Performance Parts and Stone Motorsports, home of Nick "The Manimal" Stone.

Directions Stone Racing