DRP Light Weight/Torque Absorbing Axles
DRP Light Weight/Torque Absorbing Axles are manufactured in the USA from premium quality Hy-Tuff Steel and then heat treated to exacting standards to allow the axles to twist under initial load. (Image how a sway bar or torsion bar works) The twisting action allows the axle to absorb the initial torque load to the tire, increasing forward drive by preventing the tire from breaking loose. The axle then returns to its normal state, ready for the next turn.
The unique machining and heat treating process allows these axles to be built much lighter than standard axles, saving 2-5 lbs per axle, depending on the size.
DRP LW/TA axles are available standard in 3 different diameters. The diameter we choose varies depending on the application. Amount of horsepower, amount of tire grip and level of track grip, type of vehicle and level of durability verses performance desired all play into axle sizing.
DRP LW/TA axles are stocked in lengths from 25” to 41”, typically in 1/2” increments. All stocking axles are gundrilled, although solid axles are available by special order. Stocking axle splines are 31 spline on the differential side and standard 24 spline on the drive flange side. Axles ship with an aluminum plug in the differential end with a stainless steel round head bolt and lock washer.
Light Weight: DRP Light Weight Axles (LW) are very durable and will handle vehicles up to 800+ horsepower. These axles have won many races and championships in high horsepower vehicles such as NASCAR modifieds, Asphalt Late Models, Dirt Modifieds and Dirt Late Models. LW axles are durable and typically last 2-3 seasons, depending on the application. Weight Savings: Typically 2 lbs lighter than standard gundrilled axles, based on a 33” length.
Extra Light Weight: DRP Extra Light Weight Axles (XLW) were originally designed for vehicles up to 550 horsepower. Ideal for crate late models and other low horsepower applications. These axles are also very successful in higher horsepower cars on low grip tracks. Very durable when used properly, 1-3 seasons. Durability decreases as horsepower and track roughness increase. Weight Savings: Typically 3 lbs lighter than a standard gundrilled axle, based on a 33” length.
Ultra Light Weight: DRP Ultra Light Weight Axles (ULW) are designed for maximum forward drive on low horsepower/Low grip applications. These axles are ideal for vehicles with small or hard tires with low grip or slick, low grip tracks. ULW axles offer maximum twist with minimum weight for a steel axle. These axles are not recommended for applications over 500 HP. Durability is typically 1 season. Weight Savings: Typically 4 lbs lighter than a standard gundrilled axle, based on a 33” length.
All DRP LW/TA axles are stamped on the drive flange end with the diameter and date of manufacturer. Axles should be marked with a straight line from spline to spline when new. Initial “setting” of the axle is normal after the first or second run. When line starts to twist past that point the axle is losing its memory and should be replaced.
Rough, bumpy tracks are especially tough on axles. Wheel hopping and tires scrubbing the wall are events that will lead to decreased axle life. Road race applications typically use LW series axles, regardless of the horsepower. Keep axles marked Left and Right (on cars with equal length axles) and do not interchange.
When axles twist they can bend. This is normal up to around .020” run-out. Axle bending over this amount is a sign of over twisting.