Too many modern mountain bike stems sacrifice strength and torsional stiffness for a few grams of saved weight. The Thomson X4 is the leader in strength and stiffness.Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBLeader in strength and stiffnessPrecise steering, tracking and more riding controlTraditional, knee friendly steerer clampOne piece 7000 series AluminiumMachined by Thomson, in Macon, GeorgiaThe Thomson X4 stem allows you to realize the benefits of stiffer forks and stiffer 31.8mm bars. X4 offers precise steering, tracking and more control while riding, all wrapped up in a beautiful design. The Thomson X4 is stronger and 30g lighter than the Thomson Elite 25.4mm mountain stem. It features a traditional steerer clamp that is shaped to save weight and to be knee friendly. X4 is absolutely the best combination of strength and weight available. Thomson stems are the strongest in the industry, meaning enduro and downhill riders can run Thomson confidently.The stem is one piece of solid 7000 series Aluminium extruded billet precision, machined by Thomson in Macon, Georgia. It s built and tested to the same standards as aerospace parts and it s the best stem for all-around mountain bike and cyclocross riding.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market. The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio.We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride. The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly.Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market.The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio. We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride.The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly. Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market.The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio. We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride.The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly. Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market. The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio.We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride. The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly.Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market.The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio. We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride.The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly. Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market. The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio.We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride. The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly.Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market.The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio. We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride.The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly. Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market. The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio.We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride. The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly.Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market.The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio. We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride.The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly. Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market. The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio.We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride. The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly.Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.
The Thomson Elite seatpost is over 40% stronger on ultimate strength tests than the strongest production seatposts on the market.The Elite has double the fatigue life of any other production models tested. The tube and head of the Thomson seatpost are integral machined from one piece of high strength 7000 series Aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight.7000 series Aluminium41mm Seat Rail grip lengthAvailable in 250mm, 330mm, 367mm and 410mm lengthsAvailable in all seatpost sizes-5° to +29° Tilt adjustment228g weight (330mm length)Certified to: EN 14766 2006 MTB and DIN CERTCO: 2006 MTBIt s incredibly lightweight, approximately 201g (250mm length) for road bikes and 228g (330mm length) for mountain bikes. The natural ellipse bore inside tube creates an optimum strength-to-weight ratio. We have a long 1.614 inch (41mm) seat rail grip length. This helps prevent seat rail bending from impact loads. Most other seatposts have grip lengths of at least 0.5 inch shorter than our grip length.The Thomson seatpost design incorporates a bending fuse to prevent catastrophic failure. All competitive seatposts tested, failed catastrophically with the seat and clamp components, sometimes pieces of the tube and head flew off in all directions.The Thomson seatpost has a clamp, head and upper tube strong enough to withstand 350 foot-lbs of torque. The tube will start to yield and bend at the seat tube clamp at about 250 foot-lbs of torque. Under severe impact the Thomson seatpost will bend slightly and allow the rider to come to a safe stop or finish the ride.The Thomson seatpost has all parts captive and can easily be attached to a seat without dis-assembly. Infinite tilt adjustment minus 5° and plus 29°. Very low profile clamps mean no seat interference as the swivel nuts are down between the seat rails. The designs and materials have passed extensive life and ultimate strength tests. Our ongoing testing program ensures that every production lot of seatposts meets Thomson standards. Impact absorbing clamps in the seatpost will spread and flex on impact to protect seat, rails, and rider. The seats survive heavy impact loads without bending the rails.