XRAY is proud to present the smoothest, highest-quality differential in the RC industry! Manufactured exclusively for XRAY by HUDY, made from world-renowned top-secret Hudy Spring Steel, this high-performance differential set features an exclusive double slotted design, carbide diff balls, new axial ball-bearing with larger balls for smoother operation and ultra-high durability. Impossible to wear out!  

Complete ball-differential set features hardcoated duraluminum output shafts, screw for external adjustment, both diff pulleys (2.125 and 1.77) with Labyrinth Dust Covers™, high-performance ball-bearings, carbide axial thrustbearing, heavy-duty diff washers, and carbide diff balls. 

Special screw for external diff adjustment. Manufactured exclusively by HUDY from world-renowned top-secret "Hudy Spring Steel". 

Precise nylon pulley (34T) and Labyrinth Dust Covers for ball-differential.

The pulley features XRAY invented and patented "Labyrinth Dust Covers", special anti-dust protective covers that are great for keeping dust and dirt out of the diff. Each pulley uses 12 diff balls. 

Rebuild set for one XRAY differential includes two machined diff washers and 12 steel diff balls. 

Two diff washers for ball-differentials. Each side of the washer has a distinct finish; a polished side against which the diff balls ride, and a rougher machined side that contacts the duraluminum diff output. Specially hardened to assure maximum life.  

New, innovation and new patent – the XRAY Multi-Diff™. This new unique front diff has three different settings: one-way / one-way solid / full-time solid axle.  

CNC-machined main axle for Multi-Diff™ for XRAY T1FK’05, T2, T2R and T2'007.
This axle does NOT fit the Multi-Diff™ for XRAY T1, T1Evo2, T1R, T1M, or T1FK. 

Multi-Diff™ locking axle is CNC-machined from Hudy Spring Steel™. Fits both #305102 and #305103 Multi-Diffs™ for all XRAY T1 cars. Must only be used with #305131 Inner Driveshaft Adapters. 

Precision-machined, specially-lightened outdrives for use with all XRAY T1 front one-way axles (including Multi-Diff™). The new lightweight one-way out drives manufactured from Hudy Spring Steel have a hex hole machined at each end.  

High-quality, lightened molded 34 teeth pulley with special "side click-covers" for front one-way differential. 

For serious racers looking for an edge, XRAY's new ultra-true, high-durability solid front axle body is CNC machined from lightweight Delrin® composite material, making it 25% lighter than the original Multi-Diff. This solid axle transforms the XRAY Multi-Diff into a full-time solid axle only; remaining parts must be used from the Multi-Diff. Fits all XRAY touring cars.

Used by XRAY Factory Team - a "must have" for serious racers. 

Set of shims for setting static wheelbase. Fits over rear lower pivot pins, servo saver, front one-way diff and other shims. 

Super differential silicone lube in a resealable syringe. This is the best Ball Differential lubricant combined with the easiest applicator on the market. 

Special lubricant for one-way bearings used in one-way differentials or on the main layshaft. Lubricant improves engaging speed and increases one-way bearing durability. A must for the serious racer. A drop will cure a slipping one-way immediately. 

M3x5 button-head machine screw, hex drive. Set of 10 pieces. 

Steel balls 2.4mm for ball differential. Set of 24 pieces is enough for two ball differentials (12 each). 

High-quality axial thrustbearing 3x8x3.5mm for ball differential. 

Carbide balls 2.4mm for ball differential. Improved, smoother diff operation over standard steel diff balls.  

High-precision axial thrustbearing 3x8x3.5mm for ball differential features Tungsten Carbide balls.  

High-quality ball-bearings ID x OD x thickness (mm) = 5x8x2.5mm. Set of 2 pieces. 

Cone washer ID x OD x thickness = 3mm x 8mm x 0.5mm. Set of 10 pieces.  

Rubber O-ring 1.5mm thick x 10mm dia. Set of 10 pieces. 

Polished chrome pin. Dia. x length = 2mm x 12mm. Set of 10 pieces.