Specification Brand : H&R BulletPoint1 : Fully Customizable Damping: Design your own suspension feel! Fill with any silicone shock oil (200-500cSt recommended) to match terrain needs—oil not included. BulletPoint2 : Dual-Length for Multi-Model Fit: 75mm (front) + 81mm (rear) shocks compatible with 1/12, 1/14, 1/16 scale RC cars such as HSP 94111, WLtoys 144001, Traxxas, MJX, SCY, etc.). BulletPoint3 : Leak-Proof Heavy-Duty Build: CNC aluminum body, chrome-plated shafts, and double-layered seals ensure zero oil leakage even under extreme jumps. BulletPoint4 : Build Your Perfect RC Suspension: Your Oil, Your Rules! This user-refillable shock absorber kit gives ultimate control to 1/12, 1/14, and 1/16 scale RC cars. No oil pre-filled—you choose the brand and viscosity! BulletPoint5 : Tune Your Ride Cheaply: Save 30% vs pre-filled shocks! Reuse your favorite oil or experiment with viscosities for racing, crawling, or drifting. Color : Black-Blue ExteriorFinish : Brushed ExternallyAssignedProductIdentifier1 : 0608067204227 ExternallyAssignedProductIdentifier2 : 608067204227 IncludedComponents : Comes with housing ItemName : HR Sport Springs (29484) ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 1 inches ItemPackageQuantity : 1 ItemTypeKeyword : hobby-rc-vehicle-shock-springs Manufacturer : Qloi-LeUe ModelName : BZ1 ModelNumber : Black-Blue-81mm NumberOfItems : 1 PartNumber : hr29484 ProductDescription : Q: Does this kit include shock oil? A: No oil is pre-filled. You can use any brand’s silicone shock oil (we recommend 300-500cSt). ProductSiteLaunchDate : 2019-09-17T09:39:31.698Z Size : 81mm SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 25170000 WarrantyDescription : 1 Year