Rear Combo Bulk

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Rear Combo Bulk 
Manufacturer: FastLane Machine
Part#: FLM18500
Rear Combo Bulk

List Price: $80.00
Price: $60.00
73.15 CAD | 39.94 GBP | 55.48 EUR


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  • Strongest design available.
  • Lightweight.
  • Diff case built onto the bulkhead.
  • Extra support for hinge pins.
  • Increased driveline strength.
  • Option parts available.
  • Bulks are machined out of billet 6061 aluminum for durability and strength.
  • Fast Lane’s extreme abuse warranty.
  • Replacement cost per side $15.00.

The design is lighter when compared to other aluminum bulks and diffs. Lightweight is achieved by removing material out of areas were it once was not possible. These are by far the strongest bulkheads available. By machining the diff case onto the bulk, the bulkhead is now bolted together from the side. Instead of held together by the bulk brace, chassis, skid plate and shock tower. Now these items are strengthened by this design. By using this design you can also make other parts significantly lighter, because they are no longer a deciding factor in the strength of the bulkhead. For even lighter weight you can toss out the bulk brace, it will no longer be needed with this design. The Bulkhead has even had a revision with this design. Now the hinge pins have an extra support to resist bending. Driveline strength with design has greatly been increased. With absolutely no movement or flexing of the diff case the gears will not try to separate, greatly increasing the life of your gears. Option parts available for this bulk design. Now even lighter weight shock towers and skid plates.


  • Stock bulk/diff weight: 74 grams Fast Lanes combo 138 grams
  • Fast Lanes separate Bulk and diff 170 grams
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 T-Maxx Lightweight Chassis

Designed for severe duty. Chassis is machined out of billet 6061 aluminum for durability and strength. 6mm thick. Predrilled for Fast Lane's 3 point chassis brace. Threaded mount for steering servo. Pockets milled for bulkheads, so the center of gravity is not raised. Includes all necessary hardware with standoffs to mount the reverse servo. Fast Lane's extreme abuse warranty. Replacement cost ...

Hyper ChassisHyper Chassis
  • Made in the USA
  • Designed for severe duty.
  • Steel Drive Shaft included
  • Chassis is machined out of billet 6061 aluminum for durability and strength.
  • 6mm thick.
  • 4 point chassis brace system.
  • Accepts .21 size engine or small block
  • Relocated throttle servo mount, for inline throttle operation....

Be Sure To check Out These Other Related Items:
» Front Hybrid Bulk» Ext E.F.R. Arm Kit w/ V1 Tower
» Chassis Brace Kit (L5t)» Stock Driveshaft Kit
» Extended Arm Conversion» Mid Upper Arm
» Ext Arm CVD» Chassis Brace Kit (blue anodize)(L5t)
» Flux XL Center Skid» Camber Link Kit (N Rustler)
» Extended Rear Arm Kit» Stock Arm Kit w/ V1 Tower
» Hardened Drive Cups» Savage Lower arms
» Axle Upgrade