2021 GMC Sierra MaxTrac Parts
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- SPINDLES
- 2" LOWERING SPINDLES REQUIRES 18" RIMS OR LARGER W/ 6" BACKSPACING OR LESS THESE SPINDLES FEATURE A SLIGHTLY REDUCED TURNING RADIUS TO FIT FACTORY 18" WHEELS THE TURNING RADIUS CAN BE INCREASED IF RUNNING 20" RIMS OR LARGER MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- MAXTRAC SUSPENSION'S PART# 101920 IS A PAIR OF 2" LOWERING SPINDLES MADE FROM DUCTILE STEEL & E-COATED BLACK
Additional Fitment Information:
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| 2021 - GMC Sierra |
- REAR LOWERING BOX KIT
- 4" HEIGHT REAR KIT DOES NOT FIT MODELS W/ ACTIVERIDE/MAGNERIDE SUSPENSION THIS BOX IS DESIGNED TO BE USED IN CONJUNCTION W/ FRONT COMPONENTS TO MAKE A COMPLETE 2"/4" LOWERING KIT INCLUDES FLIP KIT W/ SHACKLES & HANGERS (PART# 301940) & REAR SHOCKS (PART# 2200LL-4 x2) DOES NOT FIT MODELS W/ SINGLE ALUMINUM REAR LEAF MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 4" REAR LOWERING BOX KIT
- MAXTRAC SUSPENSION'S PART# 201940 IS A 4" HEIGHT REAR BOX KIT INCLUDING FLIP KIT, HANGERS, SHACKLES, BUMP STOPS & SHOCKS
Additional Fitment Information:
| Vehicle |
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| 2021 - GMC Sierra |
- SHOCKS
- 0"-3" FRONT ADJUSTABLE LOWERING STRUT DOES NOT FIT MODELS W/ ACTIVERIDE, MAGNERIDE, OR AIR RIDE SETTING STRUTS AT 2" OF DROP OR MORE WILL NOT ALLOW FOR THE ALIGNMENT TO RETURN TO FACTORY SPECIFICATIONS SETTING STRUTS AT 3" OF DROP MAY CAUSE VEHICLE TO RIDE STIFF AND NOT ALIGN PROPERLY DOES NOT FIT TRAIL BOSS/AT4 MODELS MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 0"-3" ADJUSTABLE LOWERING STRUTS
- MAXTRAC SUSPENSION'S PART# 371903 IS A PAIR OF 0"-3" FRONT ADJUSTABLE LOWERING STRUTS (PAIR) BLACK W/ COIL SEAT, RETAINER CLIP & RETAINER COLLAR
Additional Fitment Information:
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| 2021 - GMC Sierra |
- SHOCKS
- REAR SHOCK - 5-6" DROP HEIGHT (1 PC) SHOCKS MUST BE MOUNTED WITH THE BODY OF THE SHOCK AT THE BOTTOM & THE SHAFT AT THE TOP INCLUDES QUANTITY 2, 1.5" WIDE SLEEVES FOR UP TO A 9/16"/14MM MOUNTING BOLT 20.3" EXTENDED, 12.4" COLLAPSED MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- MAXTRAC SUSPENSION'S PART# 2000LL-4 IS A SINGLE LOOP-TO-LOOP REAR SHOCK: TWIN TUBE, STEEL BODY, BLACK
Additional Fitment Information:
| Vehicle |
|---|
| 2021 - GMC Sierra |
- REAR LOWERING BOX KIT
- 5" HEIGHT REAR KIT DOES NOT FIT MODELS W/ ACTIVERIDE/MAGNERIDE SUSPENSION THIS BOX IS DESIGNED TO BE USED IN CONJUNCTION W/ FRONT COMPONENTS TO MAKE A COMPLETE 3"/5" LOWERING KIT INCLUDES FLIP KIT W/ HANGERS (PART# 301950) & REAR SHOCKS (PART# 2000LL-4 x2) DOES NOT FIT MODELS W/ SINGLE ALUMINUM REAR LEAF MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 5" REAR LOWERING BOX KIT
- MAXTRAC SUSPENSION'S PART# 201950 IS A 5" HEIGHT REAR BOX KIT INCLUDING FLIP KIT, HANGERS, BUMP STOPS & SHOCKS
Additional Fitment Information:
| Vehicle |
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| 2021 - GMC Sierra |
- C-NOTCHES
- DOES NOT FIT MODELS W/ 8' BED NECESSARY FOR TRUCKS W/ 6" REAR DROP MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- C-FRAME SUPPORT KIT
- MAXTRAC SUSPENSION'S PART# 301960C IS A C-FRAME SUPPORT KIT FABRICATED FROM STEEL & POWDER COATED GREY
Additional Fitment Information:
| Vehicle |
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| 2021 - GMC Sierra |
- LOWERING KITS
- 2"/4" LOWERING KIT FITS MODELS W/O MAGNE-RIDE/ ACTIVE RIDE, TRAIL BOSS AND AT4 WILL GET MORE DROP KIT IS COMPRISED OF 2" LOWERING SPINDLES PART# 101920 & 4" REAR BOX KIT PART# 201940 (FLIP KIT, HANGERS, & SHACKLES) DOES NOT FIT MODELS W/ MAGNE-RIDE/ ACTIVE RIDE SUSPENSION TRAIL BOSS AND AT4 MODELS WILL RECEIVE MORE DROP AXLE SHIMS MAY BE NEEDED IF DRIVE LINE VIBRATION IS EXPERIENCED DOES NOT FIT MODELS W/ SINGLE ALUMINUM REAR LEAF MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 2"/4" LOWERING KIT (SPINDLES)
- MAXTRAC SUSPENSION'S KIT# KS331924 IS A COMPLETE 2"/4" LOWERING KIT INCLUDING SPINDLES, FLIP KIT, HANGERS, SHACKLES & REAR SHOCKS
Additional Fitment Information:
| Vehicle |
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| 2021 - GMC Sierra |
- LOWERING KITS
- 2"/4" LOWERING KIT DOES NOT FIT MODELS W/ ACTIVERIDE OR MAGNERIDE PLEASE BE AWARE THAT STRUTS SET TO 3" OF DROP WILL RIDE STIFF VEHICLE ALIGNMENT WILL REQUIRE CONTROL ARMS OR OFF-SET BALL JOINTS TO RETURN TO FACTORY SPECS DOES NOT FIT MODELS W/ SINGLE ALUMINUM REAR LEAF KIT IS COMPRISED OF ADJUSTABLE LOWERING STRUTS PART# 371903 & 4" DROP REAR BOX KIT PART# 201940 (FLIP KIT, HANGERS, SHACKLES & REAR SHOCKS) MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 2"/4" LOWERING KIT (STRUTS)
- MAXTRAC SUSPENSION'S KIT# K331924S IS A COMPLETE 2"/4" LOWERING KIT INCLUDING FRONT STRUTS, FLIP KIT, HANGERS, SHACKLES & REAR SHOCKS
Additional Fitment Information:
| Vehicle |
|---|
| 2021 - GMC Sierra |
- STRUT SPACERS
- 3" LIFT STRUT CLEARS UP TO A 32" x 11.50" TIRE ON 8"-9" WIDE RIM FENDER TRIMMING MAY BE REQUIRED DOES NOT FIT MODELS W/ AUTORIDE OR ACTIVE RIDE WILL FIT MODELS W/ MAGNERIDE (REQUIRES PART# 8317MR) MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 3" FRONT STRUT SPACERS
- MAXTRAC SUSPENSION'S PART# 831330 IS A PAIR OF 3" LIFT STRUT SPACERS FABRICATED FROM STEEL & POWDER COATED GREY
Additional Fitment Information:
| Vehicle |
|---|
| 2021 - GMC Sierra |
- STRUT SPACERS
- 2" LIFT STRUT CLEARS UP TO A 32" x 11.50" TIRE ON 8"-9" WIDE RIM FENDER TRIMMING MAY BE REQUIRED DOES NOT FIT MODELS W/ AUTORIDE OR ACTIVE RIDE WILL FIT MODELS W/ MAGNERIDE (REQUIRES PART# 8317MR) MAXTRAC SUSPENSION DOES NOT RECOMMEND USING WHEELS WIDER THAN 9" OR WHEELS WITH LESS THAN 4.5" BACKSPACING. DOING SO WILL RESULT IN VOIDING ANY AND ALL MANUFACTURER WARRANTIES
- 2" FRONT STRUT SPACERS
- MAXTRAC SUSPENSION'S PART# 831320 IS A PAIR OF 2" LIFT STRUT SPACERS FABRICATED FROM STEEL & POWDER COATED GREY
Additional Fitment Information:
| Vehicle |
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| 2021 - GMC Sierra |
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