ShockStop Suspension System

$419.98 - $579.96 $384.70 - $533.76

ShockStop Suspension System

$419.98 - $579.96 $384.70 - $533.76

The patented ShockStop Suspension System smooths out road imperfections, reducing fatigue and strain. Whether you're on a local group ride, or exploring gravel back roads, the ShockStop Stem and Seatpost will make your ride smoother, faster, and more comfortable. *If you have a Canyon, Giant or Scott bike, it may have an oversized steerer tube. If you're unsure if your steerer tube is standard or oversized, please email us at support@redshiftsports.com with the make, model, year and size of your bike and we're happy to help you.

Stem Angle & Length

Seatpost Diameter & Length *

Need a Handlebar Shim? *

Need a Seatpost Shim? *

The minimal design of the ShockStop Suspension Stem and Suspension Seatpost blend seamlessly with the aesthetic of modern bikes, while reducing fatigue and strain. The stem and seatpost work together to suspend the rider and smooth out rough terrain on the bike you already own, making your ride smoother, faster, and more comfortable.

If you have a Canyon, Giant, or Scott, it may have an oversized steerer tube. If you're unsure if your steerer tube is standard or oversized, please email us at support@redshiftsports.com and we can help you choose the right version.

Benefits:

• Go farther - reducing fatigue that happens as your body absorbs bumps and vibrations
• Ride faster - feeling refreshed from the energy that is normally wasted suspending your body as it is converted into forward motion

• Take control - customizing your suspension feel to float over obstacles so you can maintain control

• Effective suspension travel:
- Up to 20mm
• Includes 5 swappable elastomers to fine tune your riding style
• Check technical specs for compatibility

Stem Details:

Lengths	Angles	Diameters
55, 70mm (Drop bars only)	+6 degree	1 1/8" steerer tube
80, 90, 100, 110, and 120mm	+/-6 degree	1 1/8" steerer tube - appropriate for most riders. Please contact us if you have a non-standard/oversized steerer tube and need 1-¼” size.
80mm and 100mm	+30 degree	1 1/8" steerer tube

Should I get the PRO Stem?:

• The ShockStop PRO Stem has a sleek, polished 'blacked out' appearance, and offers ~15% weight savings (depending on length) over the standard ShockStop Stem. It achieves these weight savings thanks to the use of Titanium hardware, and weight reducing CNC machining.
• The ShockStop PRO Stem functions the same as the standard ShockStop Stem, and is the ideal choice for a more performance focused and weight conscious rider.

Seatpost Details:

• Optimized linkage geometry provides ultra-responsive suspension feel

• The ShockStop Seatpost is available in Endurance, PRO Endurance, and PRO Race versions. Full product comparison chart here.

What's in the Box:

• 1 x ShockStop Stem

• OR ShockStop PRO Stem, 5 x swappable elastomers (2 pre-installed, 3 additional in box), and all required hardware

• 1 x ShockStop Endurance Seatpost, 2 x springs (1 pre-installed, 1 included in box for increased stiffness), and all required hardware

• OR 1 x ShockStop PRO Endurance Seatpost, (2 pre-installed elastomers and 2 pre-installed springs, 1 extra elastomer in the box), all required hardware

• OR 1 x ShockStop PRO Race Seatpost, 2 x springs pre-installed with one elastomer pre-installed and one elastomer in the box.

ShockStop Suspension Stem:

	80-120mm Lengths	55 & 70mm Lengths (NEW)
Weight	256 g +/- 6 deg, 80mm 266 g +/-6 deg, 90mm 278 g +/-6 deg, 100mm 290 g +/-6 deg, 110mm 302 g +/-6 deg, 120mm 253 g +30 deg, 80mm 278 g +30 deg, 100mm For oversized steerer, add 2-5 g	185 g +6 deg, 55mm 212 g +6 deg, 70mm
Steerer Clamp Diameter (A)	Standard 1-1/8 inch (28.6 mm) Oversized 1-1/4 inch (31.8mm, for +/6 deg options only, available here)	Standard 1-1/8 inch (28.6 mm) signup here to be notified when oversized 1-1/4 inch steerer versions are available.
Handlebar Clamp Diameter (B)	31.8 mm	31.8 mm
Effective Travel	Up to 20mm	Up to 20mm
Material	6061 T6 aluminum	6061 T6 aluminum
Rider Weight Limit	135 kg (300 lb)	135 kg (300 lb)
Steerer Tube Clamp Stack Height	40mm	44mm
Compatibility	Drop Bars and Flat Bars note: flat bars with large back sweep might reduce effectiveness; see our FAQ or contact us.	Drop bars only
Intended Use	ASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6").	ASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6").

ShockStop Endurance Suspension Seatpost:

Diameter	27.2 mm (shims available for larger seat tube sizes)
Length	280 mm (11 in) 350 mm (14 in)
Suspension Travel	35 mm (1.4 in)
Rearward Offset	7 mm (0.25 in)
Rearward Offset (@ 25% travel)	12 mm (0.4 in)
Spring Pre-load	User Adjustable
Weight	280 mm is 498 g - w/main spring 350 mm is 548 g - w/main spring
Rider Weight Limit	110 kg (242 lb)
Material	6061 T6 Aluminum Alloy
Saddle Rail Compatibility	7 mm round & 7x9 mm oval
Di2 Battery Compatibility	Only compatible with the 350mm length (requires mount kit sold separately)
Intended Use	ASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6").

ShockStop PRO Endurance Suspension Seatpost:

Diameter	27.2mm (shims available for additional non-standard seat tube sizes)
Length	280 mm (11 in) 350 mm (14 in)
Suspension Travel	35 mm (1.4 in)
Rearward Offset	7 mm (0.27 in)
Rearward Offset (@ 25% travel)	12 mm (0.47 in)
Spring Pre-load	User Adjustable
Weight	280 mm – 445 g 350mm – 502 g
Rider Weight Limit	110kg (242lb) for 27.2mm diameters
Material	6061 T6 Aluminum Alloy
Saddle Rail Compatibility	7mm round & 7x9mm oval
Di2 Battery Compatibility	Only compatible with the 27.2mm diameter x 350mm length (requires mount kit sold separately)
Intended Use	ASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6").

ShockStop PRO Race Suspension Seatpost:

Diameter	27.2 mm (shims available for larger seat tube sizes)
Length	280 mm (11 in) 350 mm (14 in)
Suspension Travel	20 mm (0.8 in)
Rearward Offset	7 mm (0.27 in)
Weight	280 mm – 380 g (with 2 elastomers) 280 mm - 410 g (with 1 elastomers and double spring) 350 mm – 415 g (with 2 elastomers) 350 mm - 445 g (with 1 elastomer and double spring)
Rider Weight Limit	110 kg (242 lb)
Material	6061 T6 Aluminum Alloy
Saddle Rail Compatibility	7mm round & 7x9mm oval
Di2 Battery Compatibility	Yes - standard battery holders will fit
Intended Use	ASTM F2043 Class 2 - For on and off-road riding and drops less than 15cm (6 inches).

[Stem] How is the ShockStop Stem different from other suspension stems?

There are a lot of ways the ShockStop is different - so many in fact, we wrote a whole blog post about it. Check it out here.

[Stem] How do I measure my steerer tube diameter?

The easiest way to determine your steerer tube size is to use a pair of calipers to directly measure the diameter or take your bike to the local bike shop and they will be able to measure it for you. Alternatively, most of the time a manufacturer will list this under their specifications in the Frame/Fork section. Make sure you are looking at the correct model year as these sizes can change year to year.
The 1-1/8" ShockStop Stem is the standard size used by most modern bikes. The 1-1/4” version can now be used on popular brands such as Giant and Canyon bikes (please contact us if you need a 1-¼" size).

To read more Frequently Asked Questions about the ShockStop Stem, click here.

[Seatpost] What length should I choose?

350mm is our standard size, but we added the 280, 400, 450mm to allow for a wider range of fits (400 & 450 only available for the ShockStop Endurance Seatpost). Measure your current seatpost from the clamp collar to the saddle rail:

If that distance is less than 205mm, you can use the 280mm suspension seatpost.
If it is between 205mm and 250/275mm (depending on diameter) order the 350mm size.
If it is between 250 (larger diameters than 27.2) and 300mm order the 400mm size.
If it is between 300 (larger diameters than 27.2) and 350mm order the 450mm size.

[Seatpost] What kind of saddle bags can I use with the ShockStop Suspension Seatpost?

Most standard strap-based saddle bags will fit the ShockStop Seatpost without issue. If your saddle bag uses rigid clips, clamps, or some other inflexible attachment method, it's possible that your bag may not be compatible.
Any bag that just attaches to the saddle or just attaches to the post is fine. But when you attach to both the post and the saddle you need to account for the relative motion of the saddle to the post. This means that if you cinch down the bag when off the bike it might have some movement when you get on the saddle and compress the post a bit - this might not be a problem but it might be something that is an issue.
It all really depends on weight and how stable the bag is and if it is attached to both the post and the saddle - it can be fine but with a lot of weight it will mean it can move around when the post is compressed. It will likely come down to testing it out with your specific bag to see how it works. And if you have a bag that is able to be secured to just the post or to the post and a rear rack then you will be all set.

[Seatpost] Is the stiffness of the ShockStop Seatpost adjustable?

Absolutely - We designed the ShockStop Seatpost so that you can adjust it to perfectly match your weight and riding style. Depending on the version you've chosen, the seatpost comes with:

Endurance - a standard spring and an additional spring that can be added inside the standard spring to increase the stiffness.

PRO Endurance - inner & outer coil, 2 pre-installed elastomer + extra elastomer in the box that can be swapped to increase the stiffness.

PRO Race - inner & outer coil, pre-installed elastomer + extra elastomer in the box that can be swapped to increase the stiffness.

The preload on the Endurance and PRO Endurance versions have an adjustment knob at the bottom of the seatpost that allows you to adjust the spring preload - the amount of force required to cause the saddle to start moving. The PRO Race version has a set preload but the stiffness can be adjusted by changing the elastomers inside.

To read more Frequently Asked Questions about the ShockStop Seatpost, click here.

Stem Instructions & Videos

55mm & 70mm Lengths [NEW]:

Download (PDF) Instructions:	Instructions - ShockStop Suspension Stem - 55mm & 70mm lengths
Elastomer Selection Chart:	Elastomer Selection Chart for 55mm & 70mm ShockStop Stems

Installation Video (55 & 70mm Stems):

80mm Length:

Download (PDF) Instructions:	Instructions - ShockStop Suspension Stem - 80mm length
Elastomer Selection Chart:	Elastomer Selection Chart for 80mm ShockStop Stem

Elastomer Install and Removal Video (80mm Stem):

90-120mm Lengths:

Download (PDF) Instructions:	Instructions - ShockStop Suspension Stem - 90-120mm lengths
Elastomer Selection Chart:	Elastomer Selection Chart for 90-120mm ShockStop Stems

Installation Video (90-120mm stems):

Seatpost Instructions & Videos

Download Instructions (PDF):
Instructions - ShockStop Endurance Suspension Seatpost

Instructions - ShockStop PRO Endurance Suspension Seatpost

Instructions - ShockStop PRO Race Suspension Seatpost
Instructions - Di2 Battery Holder for 350mm ShockStop Seatpost

Installing the ShockStop Endurance Suspension Seatpost:

Video Section Time-Stamps:

00:14 Compatibility
01:41 Choosing Your Starting Setup
03:00 Installing Inner Spring
05:36 Setting Initial Preload
06:55 Measuring Your Existing Saddle Position
08:11 Installing the Shockstop Suspension Seatpost in Your Bike
09:56 Installing the Saddle
11:42 Positioning Your Saddle
14:03 Tightening the Saddle Clamp Bolts
16:27 Setting 20% Sag
18:22 Maintenance