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135 Rancho ® Part Numbers ending with the letter "B" Designate Black Finish. Rancho ® does not recommend or endorse the use of its products in conjunction with those of other aftermarket suspension or lift kit manufacturers. RAISED HEIGHT SUSPENSION SHOCK ABSORBERS YEAR MODEL FRONT REAR QTY DESCRIPTION KIT PART NO. FRONT REAR Suspension GMC Pickup — Sierra 1500HD ½ Ton - 4WD — Steering Stabilizers STABILIZER YEAR MODEL SHOCK BRACKET 2007-05 Crew Cab w/o OEM Steering Damper Mounts; Single Steering Damper RS5407 RS5548 RS7407 2003-01 Crew Cab w/o OEM Steering Damper Mounts; Single Steering Damper RS5407 RS5548 RS7407 Pickup — Sierra 1500HD ½ Ton - 2WD 2007-05 w/ Automatic Transmission; w/ Torsion Bar; w/o 4 Wheel Steering; w/o Electronic Suspension 4 ″ 2½ ″ RS6550B★ 1 Brackets RS6550B-1 RS55296 RS5296 RS55297 RS5297 1 Knuckles RS6550B-2 RS7296 RS7297 1 Subframe RS6550B-3 RS999296 RS999297 2003-01 w/ Automatic Transmission; w/ Torsion Bar; w/o 4 Wheel Steering; w/o Electronic Suspension 4 ″ 2½ ″ RS6550B★ 1 Brackets RS6550B-1 RS55296 RS5296 RS55297 RS5297 1 Knuckles RS6550B-2 RS7296 RS7297 1 Subframe RS6550B-3 RS999296 RS999297 Pickup — Sierra 1500HD ½ Ton - 4WD — Steering Stabilizers STABILIZER YEAR MODEL SHOCK BRACKET 2007-05 Crew Cab w/o OEM Steering Damper Mounts; Single Steering Damper RS5407 RS5548 RS7407 2003-01 Crew Cab w/o OEM Steering Damper Mounts; Single Steering Damper RS5407 RS5548 RS7407 Pickup — Sierra 2500 ¾ Ton - 4WD 2004-99 All; w/ Automatic Transmission; w/ Torsion Bar; w/o 4 Wheel Steering; w/o Electronic Suspension 4 ″ 2½ ″ RS6550B★ 1 Brackets RS6550B-1 RS55296 RS5296 RS55297 RS5297 1 Knuckles RS6550B-2 RS7296 RS7297 1 Subframe RS6550B-3 RS999296 RS999297 Pickup — Sierra 2500 ¾ Ton - 4WD — Steering Stabilizers STABILIZER YEAR MODEL SHOCK BRACKET 2004-99 All; w/o 4 Wheel Steering; w/o Electronic Suspension w/o OEM Steering Damper Mounts; Single Steering Damper RS5407 RS5548 RS7407 Pickup — Sierra 2500HD ¾ Ton - 4WD 2015-11 All; w/ Torsion Bar Relocation System 4 ″ 3 ″ RS6554B★ 1 Brackets RS6554B-1 RS5380 RS5381 1 Left Knuckle RS6554B-2 — RS7381 1 Right Knuckle RS6554B-3 RS999380 RS999381 1 Subframe RS6554B-4 2015-11 All; w/ Torsion Bar Cross Member Drop System 4 ″ 3 ″ RS6564B★ 1 Miscellaneous RS6564B-1 RS5380 RS5381 1 Left Knuckle RS6564B-2 — RS7381 1 Right Knuckle RS6564B-3 RS999380 RS999381 1 Subframe RS6564B-4