Swift linear bump springs offer the highest measurable shock stroke in the industry. Unlike inefficient rubber and foam bump stops, Swift bump springs are fatigue and heat resistant.
Our bump springs are an essential upgrade for performance minded individuals yearning to maximize suspension tune ability. And, to keep things simple, our engineers developed a proprietary retainer which seamlessly fits all spring rates.
All the specs below are subject to change without any notice.
LINEAR RATE
| Part # | Spring Rate | OD | Length | Stroke |
| lbs/inch | inch | inch | inch | |
| SBS0400 | 400 | 2.0 | 2.25 | 1.12 |
| SBS0500 | 500 | 2.0 | 2.25 | 1.27 |
| SBS0600 | 600 | 2.0 | 2.25 | 1.11 |
| SBS0700 | 700 | 2.0 | 2.25 | 1.20 |
| SBS0800 | 800 | 2.0 | 2.25 | 1.01 |
| SBS1000 | 1000 | 2.0 | 2.25 | 1.00 |
| SBS1200 | 1200 | 2.0 | 2.25 | 0.89 |
| SBS1400 | 1400 | 2.0 | 2.25 | 0.83 |
| SBS1600 | 1600 | 2.0 | 2.25 | 0.76 |
| SBS1800 | 1800 | 2.0 | 2.25 | 0.87 |
| SBS2000 | 2000 | 2.0 | 2.25 | 0.84 |
| SBS2500 | 2500 | 2.0 | 2.25 | 0.73 |
| SBS3000 | 3000 | 2.0 | 2.25 | 0.72 |
| SBS4000 | 4000 | 2.0 | 2.25 | 0.71 |
| SBS5000 | 5000 | 2.0 | 2.25 | 0.62 |
| SBS6000 | 6000 | 2.0 | 2.25 | 0.50 |
| SBS7000 | 7000 | 2.0 | 2.25 | 0.49 |
| SBS8000 | 8000 | 2.0 | 2.25 | 0.53 |
PROGRESSIVE RATE
| Part # | Spring Rate | OD | Length | Stroke |
| lbs/inch | inch | inch | inch | |
| SBS1000 V | 500-1000 | 2.0 | 3.00 | 1.18 |
| SBS1200 V | 600-1200 | 2.0 | 3.00 | 1.06 |
In order to meet the needs of individuals whom aggressively utilize bump stops, Swift has developed another unique bump spring solution.
Our newly developed flat wire bump spring features zero side shearing upon full compression, and is optimized for an even greater amount of shock travel (compared to round wire springs).
All the specs below are subject to change without any notice.
LINEAR RATE
| Part # | Spring Rate | OD | Length | Stroke |
| lbs/inch | inch | inch | inch | |
| SBS0200 S | 200 | 2.3 | 2.25 | 1.50 |
| SBS0300 S | 300 | 2.3 | 2.25 | 1.47 |
| SBS0400 S | 400 | 2.3 | 2.25 | 1.35 |
| SBS0500 S | 500 | 2.3 | 2.25 | 1.21 |
| SBS0600 S | 600 | 2.3 | 2.25 | 1.21 |
| SBS0700 S | 700 | 2.3 | 2.25 | 1.31 |
| SBS0800 S | 800 | 2.3 | 2.25 | 1.12 |
| SBS0900 S | 900 | 2.3 | 2.25 | 1.21 |
| SBS0900 LS | 900 | 2.3 | 4.50 | 1.76 |
| SBS1000 S | 1000 | 2.3 | 2.25 | 1.18 |
| SBS1100 S | 1100 | 2.3 | 2.25 | 1.07 |
| SBS1200 S | 1200 | 2.3 | 2.25 | 1.13 |
PROGRESSIVE RATE
| Part # | Spring Rate | OD | Length | Stroke |
| lbs/inch | inch | inch | inch | |
| SBS0800 VS | 400-800 | 2.3 | 3.00 | 1.58 |
| SBS1000 VS | 500-1000 | 2.3 | 3.00 | 1.46 |
| SBS1200 LVS | 800-1200 | 2.3 | 4.50 | 1.18 |
BUMP SPRING RETAINERS
(Sold individually)
For OD 2.0" Bump Spring
| PART NUMBER | Shaft Diameter |
| BSR500 | 1/2" |
| BSR551 | 14mm |
| BSR625 | 5/8" |
For OD 2.3" Flat Wire Bump Spring
| PART NUMBER | Shaft Diameter |
| BSR500S | 1/2" |
| BSR551S | 14mm |
| BSR625S | 5/8" |
Penske Bump Cap for OD 2.3" Flat Wire Bumps
| PART NUMBER |
| SBCPS |
Bump Spring Stacker
Introducing the correct way to stack a bump spring. Our bump spring stackers allows you to create any combination of rate using our flat wire bump springs. Comes with an adjustable lock nut giving you the ability to lock out the lower bump spring at the compression of your choosing allowing for a fully customizable true dual rate bump spring setup.