On Line Performance Parts
Axles Gear Sets And Differential Components
There are three popular styles of heavy duty differentials, the GM 12 Bolt, the Dana "60" and the 9" Ford. We carry complete lines for these OEM "heavy duty" rear ends, but also carry parts for the lesser known units from American Motors 8 bolt, Chrysler 8.25 / 8.375 / 8.75 / 9.25 , Dana 28 / 30 / 36 / 44 / 60 / 61 / 70 HD / 70U / 80, Ford 7.5 / 8.80 / 9.00 / 10.25 , GM 7.50 / 7.625 / 8.20 / 8.25 / 8.40 / 8.50 / 9.50 / 10.25 / 12 Bolt Car, 12 Bolt Truck, In addition to superior quality Mark Williams and Strange Engineering drive line and chassis components. Not all differentials have the same spline counts for the axle / carrier/ gear sets . Axle splines range in sizes from 27 to 40, depending upon manufacturer and application. The larger number of splines on an axle, the stronger the fit / connection to other components in the differential it becomes. A 35 tooth custom axle spline is almost 89% stronger than a OEM 30 tooth spline, and a 40 tooth custom axle spline is 33% stronger than it's 35 tooth after market counterpart. So in short, after market 35 - 40 tooth street/strip/track hardened axles are some of the strongest components available and are a must for 4x4's that use high stall torque converters and large off road style tires. We have some customers who replace axles in their 4x4's 3-4 times a year, instead of buying a heavy duty after market axle once. They love their high power engines, love to spin those big tires in the mud bogs, but stock axles will not take the abuse that our LaPouttre Racing Engines can dish out. As the saying goes, you can pay me a little more now or pay me allot more later.
Gears define on how a vehicle will run in a specified rpm range/ speed and how it will accelerate. Gear Ratios range greatly from 2.72 to 6.50. Low ratio gears like "2.73" are best suited for vehicles where gas mileage on the highway is the major concern. Ratios of 4.56" and above are strictly for acceleration, such as drag racing or stop and go city driving while towing heavy loads. If your into occasional towing in the hills or street/strip racing, then a gears set ratio of 3.73 or 4.11 range will be your best choice of both worlds. Please contact us with your application, differential model and style, and other particulars like engine displacement, torque converter stall speed, and transmission gear ratios and vehicle tire sizes so we can tailor the proper differential gears set for your use.
Hardened axles provide superior fatigue strength ensuring dependable launches in drag racing applications. Nothing is more dangerous than a broken axle in a drag car racing uncontrollably down the track. Ensure your safety by using our selection of light weight hardened racing axles.
Hardened Yokes and C-Clip eliminators are essential in many drag racing sanctioning bodies. Yoke failure can literally bounce the driveshaft through the bottom of a vehicle creating a very dangerous situation for the racer. C-clip failure can launch the axle and rear wheel assemblies right from under the vehicle while running down the track, creating a missile that can kill unsuspecting spectators in the stands. While designing and building a racing differential, it is a good piece of insurance to install a hardened yoke assembly and c-clip eliminators to prevent catastrophic failure that will sideline you at the track.
We can have LaPouttre Racing Engines/Heads custom manufacture any rear end for most any application. On Line Performance Parts sells those as well as off the shelf and custom units manufactured by Mark Williams and Strange Engineering as listed below. A LaPouttre differential assembly takes approximately 6-8 weeks lead time from payment to final delivery to you door. A Williams or Strange stocked differential assembly can take a week or two for delivery, a custom unit takes approximately 10-12 weeks for delivery. Call in advance for availability and pricing.
Ring and Pinions Sets
Spools and Mini-Spools
Super Shim Packs
Aluminum Rear End Girdles
Quick Change Rear Gears Sets
Warn Locking Hubs
Complete assembled and race ready rear ends (additional Options available)
Street / Strip Axles, many popular styles including those listed below
Mark Williams Enterprises
Mark Williams makes an extensive line of high quality racing components, some of the best drive line and chassis racing components in the business. I can tell you that his products are of top quality, we can almost guarantee their timely service to us for returns and customer support during the racing season to almost anywhere in the entire country.
Standard Hi-Torque Axles
Gun Drilled Hi-Torque Axles
Super light Hi-Torque Axles
Custom Oval Track Hi-Torque Axles
In Stock Oval Track Hi-Torque Axles
Pro Street Axles
Bolt On Axle Retainer Kits
Pro Street Detroit Lockers
Stainless, Aluminum and Titanium Lug Nuts, Drive Studs, and Snap Washer Lug Nuts
Light Weight Profile Milled Spools
Drilled Ring Gear Bolts, Safety Wire and Pliers
Mini-Spools , Spacers, Cross Pins
Posi Traction Units (Cone and Clutch)
Standard, Pro, Large Pinion Pro Gear Sets
Gear Installation Kits and Videos
Pinion Depth Checker / Measuring Tools
Race Ready Ford 9" 3rdMembers, Complete Rears
Ford 9" Axle Housings, 3rdMember Cases, Cases, Pinion Supports
Standard and Lightweight Spools, Mini-Spools and Cross Pins
Modular 4-Link Axle Housings / Assemblies
9" Modular Econo/Comp Housings / Assemblies
12 Bolt Aluminum Modular Housings / Assemblies
Modular / Floater End Bells
Full Floater Housings / Assemblies (including Carbon/Carbon Hubs)
Housing Ends, Retainer Plates, Bolt kits and Narrowing Tools
4340 Forged Transmission and Pinion Yokes
Rapid Release Transmission Yokes
Aluminum Transmission Yokes
Rear End and Transmission Couplers (Regular and Quick Disconnect)
4-Link Titanium Bolt Kits
4-Link 4130 Hardware Kits
Strange Engineering is the premier fore runner in high performance drive line manufacturing and axle heat treatment using exotic top quality materials. The Thru-Hard (Hy-Tuf) axles are fully heat treated through out to a Rc 46-48 full depth hardness, the best quality that you can buy for the track. The S/S and S/T Axles are induction hardened Rc 58-62 (hardness decreases from the surface to the axle's core). The S/S axles are 31 spline and are ideal for the street use, much stronger than stock. The S/T Axles are Street / Strip 35 Spline Axles where the 35 splines make for a stronger axle connection to the differential gears / components. S/S and S/T axles are for when you need some ductile flex to meet the extreme demands that pot holes and curb shots put on your favorite ride, since a fully hardened axle would not bend under these conditions. The harder a metal becomes, the less it will flex before it "shatters" like glass, though it will be essentially stronger before it breaks. The Thru - hardened axles might not flex under certain extreme street conditions (like high speed pot holes or side loading curb shots), where as the S/S and S/T Axles would "Flex" and mostly retain their shape. All Thru-Hardened axles are NHRA and IHRA accepted and work fantastically at the track, where there are no pot holes at the end of the quarter mile. All S/S and S/T are NHRA and IHRA accepted and will work when your cruising down the street, the dirt roads, the highway, the track, and will probably handle more than the average occasional pot hole and curb shot. If your running only at the track, Thru-Hardened is the only way to go. If your going from point a to b, Induction hardened S/T axles are your best choice. If money is of concern, and you need stronger than stock axles, then S/S axles are the way to go, though the S/T axles only cost a little bit more. Products from Strange engineering are legendary in their quality and customer support, we strongly encourage their use.
Axle bearings and C-Clip Eliminators
Axle Gun Drilling and Lightening
Axle Retaining Plates
Axle Stud Kits
Pro Race Axles
Pro Race Axles (40 spline)
Pro Race Axles (Ultra Light)
Pro Race Axle "Packages"
S/S & S/T Axle "Packages"
S/T Series Axles
Center Section Components
Cases 9" Ford Nodular and Aluminum
Cases 12-Bolt Aluminum "Drop Out"
Components 12-Bolt "Drop Out"
Components 9" ford
Components Dana "60"
Gear Sets and Installation Kits
Gear Set Lightening service
Lightweight Ford 9" Components
Pinion Supports Ford 9"
Posi-Units and Lockers
Spools (lightweight Pro
Spools 12 Bolt "Drop Out"
Spools S/T Series
Spool Bearing Kits
Floater Kits and Components
Housing Ends (Forged)
Main Support Caps
Rear End Aluminum Girdles
Packages and Rear End Assemblies
Pro Race Axle Packages
S/S & S/T Axle Packages
Complete Rear End Dana "60"
Complete Rear End 9" Ford
Complete Rear End 9" Mustang "Bolt In"
Complete Rear End Live Axle 10.5"/11.5"
Complete Rear End Live Axle 9"/9.5"
Complete Rear End Aluminum 26" Housing
Strut Packages (Forged Aluminum)
Winters Performance Products
Circle Track "Quick Change" Rear Ends
We use the best parts and value from the following manufacturers and distributors
not all products that we carry are listed due to the large range of applications
DTS (Drive Train Specialists)