Skunk2 Universal Race Spring (Straight) - 6 in.L - 2.5 in.ID - 10kg/mm (0600.250.010S)

SKU: SKK521-99-1000

Coilover Springs

SK Race Springs...

Skunk2 Universal Race Spring (Straight) - 6 in.L - 2.5 in.ID - 10kg/mm (0600.250.010S)

Skunk2 Racing

Skunk2 Universal Race Spring (Straight) - 6 in.L - 2.5 in.ID - 10kg/mm (0600.250.010S)

SKU: SKK521-99-1000

Coilover Springs

SK Race Springs...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

We accept

Description

Skunk2 Race Springs for Pro-C or Pro-S II Coilovers allow you to fine tune handling performance and driver feel through customized spring rates and ride heights. All Skunk2 Race Springs are CNC-wound using the highest quality SAE 9254V spring steel, shot-peen stress relieved, and corrosion-protected thanks to powdercoating and specialized phosphate treating processes.

Product Overview

Skunk2 race springs are available separately giving the experienced tuner more freedom in designing custom suspension set-ups. These are the same springs that come standard in each Skunk2 Racing adjustable coilover kit. Available as straight, elliptical, or cone tapered in numerous lengths and rates - you can be sure that perfect suspension setup is just a step away. How to read part # on spring: Example 0500.250.008 * 0500: (length of spring = 5") * 250: (inner diamater of spring = 2.50") * 008: (spring rate = 8kg/mm) Spring Rate Conversion: 1 kg/mm = 55.88 lb/in

Features and Benefits

6 in. L x 2.5 in. ID
10K [560 lbs./in.] Spring Rate
Straight
Replacement For Pro-C/Pro-S II Coilovers

Product Details

Description:	Race Coil Spring
ID:	2.5in
Length:	6in
Part Number:	skk521-99-1000
Rate:	10kg/mm
Style:	Straight
WARNING CA Proposition 65 Message:	WARNING: This product can expose you to chemicals including lead; which is known to the State of California to cause cancer. For more information; go to www.P65Warnings.ca.gov.
WARNING CA Proposition 65:	Yes

Part Type

Coilover Springs

Data: v4.2 - Upd: 2026-10-13 07:05:39

Features

10K [560 lbs./in.] Spring Rate
6 in. L x 2.5 in. ID
Replacement For Pro-C/Pro-S II Coilovers
Straight

Specifications

Product Attributes - Brand: Skunk 2
Product Attributes - Manufacturer's Part Number: 521-99-1000
Product Attributes - Part Type: Coilover Springs
Product Attributes - Product Line: Skunk2 Racing Coilover Springs
Product Attributes - UPC: 873265002108
Product Attributes - Coilover Spring Inside Diameter (in.): 2.500 in.
Product Attributes - Coilover Spring Inside Diameter (mm): 63.50mm
Product Attributes - Coilover Spring Length (in.): 6.000 in.
Product Attributes - Coilover Spring Length (mm): 152.40mm
Product Attributes - Progressive Rate Spring: No
Product Attributes - Coilover Spring Rate (lbs/in): 560 lbs./in.
Product Attributes - Spring Finish: Red
Product Attributes - Position: Front and rear
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Replacement coilover spring for Skunk2 Pro-ST, Pro-C, and Pro-S II coilovers.

Reference Information

Brand Name/s	Skunk2 Racing
StreetFX SKU	skk521-99-1000
SFX Item ID	4442238
Supplier Item Code	4442238
Manufacturer SKU	521-99-1000
Manufacturer UPC	873265002108
Alternative References	skunk2, SK2-521-99-1000, 10kg/mm, (0600.250.010S)