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Taking the standard Carli Coilover Leveling System to an entirely new level, the Bypass version allows you to take further advantage of the coilovers for unrivaled suspension cycling performance. This is not a "lift kit,"`it is a true suspension system.
Please see notes below regarding available options and requirements.
This is one of Carli's most capable off-road systems. Similar in street ride to the Coilover and Pintop kit with seemingly no bottom, they spec'd this system with King 2.5" Front Coilovers, 8" Stroke 2-Tube Front Bypasses, 12" Stroke Rear 3-Tube Bypass with an oversized rebound tube. This system is also height adjustable approximately 1" to compensate for large bumpers/winches.
For those unfamiliar, a bypass shock has external tubes with one-way check valves that are fully adjustable to allow users to tailor the amount of fluid that bypasses the piston/valving on either the compression or rebound stroke within the effective range of the bypass tube. Typically, there will be a tube surrounding the compression zone at ride height that will allow fluid to freely move around the piston giving a supple ride. Once a large hit is encountered, the piston will move upward closing off the port, thereby forcing all fluid through the valving which substantially increases the shock's resistance in this secondary zone. This acts as an internal bump-stop of sorts and gives tunable progression to the shock making it the perfect dual purpose setup.
Conversely, on the rebound side, Carli normally specs tubes that are oversized and deep in the travel stroke to allow a high volume of oil to bypass ensuring the shock shaft comes out quick enough to maintain contact with the ground (doesn't get hung-up in the bump-zone after a large hit). As the shock extends and closes off the rebound tube, all the valving on the rebound side engages to slow the shaft as it reaches maximum extension, top-out. Simply put, the larger the shock diameter, the more capable the setup; the more tubes and "zones", the more adjustability; the larger the tubes, the more fluid can flow around the piston and the more valving you can run to increase the stopping power in the "bump-stop" or "top-out" zone.
The Coilover Bypass system boasts Carli specific, blueprinted, King 2.5" shocks on all four corners. In an effort to provide you with the best product, Carli designed a custom piston to determine proper base flow rates to ensure the shock works well in the heavy duty truck platform; the shocks are then tuned around the custom pistons based on the only thing that truly matters, seat-of-the-pants feel. ALL of Carli's King shock offerings are rounded off with shafts machined and polished from a solid piece of 17-4 Stainless. Unlike King's standard shafts, there is no coating to wear off, weather can't hurt them and if there is a small chip, you can round the edges with emery cloth to ensure the seal housing isn't damaged as they're not brittle like the stock, hardened shafts. The shocks are finished with King oil good to -55° F. Note that all King shocks are built with a plated steel body. If subjected to inclement weather for extended periods, we recommend wrapping your shocks in 3M to provide a moisture barrier that's replaceable.
The truck will sit 2.5" higher in the front and have more wheel travel thanks to the Coilovers. Stainless Brake Lines and an Adjustable Track Bar round off the front end geometry correction while Caster Shims improve on the stock handling. The rear is outfitted with a block eliminating Full Progressive Spring Pack lifting it 2" requiring no block to achieve proper ride height in the rear. The result is extended travel and a softer ride while wheel hop/axle wrap are minimized at the cost of 15% less load capacity than a stock F-250.
The rear is outfitted with a Full Progressive Spring Pack requiring no block to achieve proper ride height; thus, travel is extended and wheel hop/axle wrap minimized at the cost of 15% less load capacity than a stock F250. The Coilover-Bypass is an Off-Road oriented system; thus, we recommend the purchase of a Differential Guard for axle protection, High Mount Steering Stabilizer for steering control and Fabricated Radius Arms for strength and Limit Strap mounting. At this level of suspension, a roll cage is also recommended if the system will be used to its full potential.
Being bypass equipped, you can expect to hear clicking from the opening and closing of the check valves in the external tubes of the shocks. On the bright side, the suspension is tuned by Carli, but fully adjustable to your preference. You can turn tubes for more float and ride comfort or engage more valving for better control and off-road performance. From Carli, these shocks are setup with a wide open rebound and neutral compression (Carli's recommended, all around specification).
WHEEL AND TIRE: Carli recommends 17"-18" wheels, no more than 9" wide with 5.5" of backspacing with Carli Fabricated Radius Arms or 5" Backspace with factory arms; 5" will require a bit more trimming. Tires, 37x12.5" will fit with some trimming; 35" will likely fit without trimming. The more rubber, the better the small bump compliance will be at proper inflation pressures. The ride will firm up as you go larger in wheel diameter.IMPORTANT NOTES:
- WHEELS: Carli Recommends a 17"-18" Wheel, no more than 9" wide with 5"-5.5" of Backspacing on Leveling Systems
- TIRES: 35", E-Rated Tire Fitment is Recommended. Recommended unloaded Tire Pressure 45F/40R.
- RECOMMENDED CONFIGURATION: Carli Leveling Systems are Designed and Tested on Vehicles with 17"-18" Wheels with 35", E-Rated Tires. Stock wheels and tires or running a larger wheel diameter will result in a stiffer ride.
- LEAF SPRINGS: Full Replacement Leaf Spring option requires NO BLOCKS to achieve level stance.
- ManufacturerCarli Suspension
- Carli Custom Tuned KING 2.5" Remote Reservoir Front Coilover Shocks
- 2-Tube Front and 4-Tube Rear Bypass Shocks
- Stainless Steel Shock Shafts
- Reservoir Mounts
- Upper and Lower Coilover Conversion Brackets and Hardware
- Extended braided Brake Lines
- Caster Correction Shims
- Adjustable Track Bar
- Front Bump Stop Pucks
- Full Replacement Progressive Leaf Springs
- Level Stance
- Geometrically Correct
- Best Handling
- Unparalleled Control
- Controlled On-Road Ride
- Unmatched Bottom Out Capability
- Shock Diameter 2.5"
- Front Lift Height 2.5"
- Rear Lift Height 2" (F-250) / 1/2" (F-350)
- Tire Size Up to 35"
- Front Travel 8"
- Rear Travel 12"
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