Shop › Uprated Front Axle Kits Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Uprated Front Axle Kits from $135.00 These kits may be used on TR3 thru TR6 models. Choose the option you would like below. Part Number: Select Part Number HP660 HP661 Add To Cart Added! These kits may be used on TR3 thru TR6 models. Choose the option you would like below. You Might Also Like Upper Front Suspension from $1.00 TR4A-TR250-TR6 Front Suspension from $1.50 Wire Wheel Adaptors and Nuts, 8 TPI from $1.25 Shock Links & Trailing Arm Plugs, TR4A-TR250-TR6 from $2.25 Wheel Studs, TR2 thru TR6, Spitfire, GT6 $3.00