{"product_id":"tr8-adjustable-length-crankset-cross-country-trail","title":"TR8 Adjustable Length Crankset - Cross Country\/Trail","description":"\u003cp data-path-to-node=\"8\"\u003eWe designed the TR8 Adjustable Length Crankset around one simple idea: one crankset that optimizes fit and pedaling efficiency for every rider, from XS to XL. Machined from high-strength 7075 aluminum, it’s engineered to clear obstacles on the downhill and take you back to the top with the kind of efficiency that keeps you fresh to do it again.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003eMost bikes come spec’d with cranks that are far too long for the average rider. Even a 5mm discrepancy in length can result in wasted energy, increased pedal strikes, and unnecessary joint wear. The TR8 allows you to fine-tune your crank length to your specific body and riding style. It’s a difference you’ll feel in the parking lot before you even reach the trailhead.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003eThe TR8 utilizes an adjustable dovetail system paired with Grade 12.9 fasteners, giving you a range from 140mm to 175mm in 5mm increments. To ensure maximum durability, we chose a 7075 aluminum construction coated in a Type 3 Hard Anodized finish. At 885g, the TR8 prioritizes durability and precision adjustment over gram-shaving. However, the biomechanical advantage of a perfect fit far outweighs the scale weight. By optimizing your leverage and hip angle, you will pedal more efficiently and produce more usable power than you ever could on a \"lightweight\" 175mm carbon crankset.\u003c\/p\u003e\n\u003cp data-path-to-node=\"11\"\u003eWe believe optimizing crank length is as essential as setting your seat post height. Once you find your \"sweet spot\" with the TR8, there is no going back. You’ll accelerate faster, climb with more sustained power, and clear technical sections that used to threaten you with pedal strikes. Fine-tune your ride with the TR8, and you’ll wonder why you were fighting against long cranks for so long.\u003c\/p\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003ci data-index-in-node=\"0\" data-path-to-node=\"12\"\u003eChainring sold separately.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cstrong\u003eTech Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntended Use:\u003c\/strong\u003e Cross Country, Trail, and All Mountain riding\u003cbr\u003e\u003cstrong\u003eBottom Bracket Compatibility:\u003c\/strong\u003e 24mm, Hollowtech\u003cbr\u003e\u003cstrong\u003eChainring Interface:\u003c\/strong\u003e 3-bolt direct mount\u003cbr\u003e\u003cstrong\u003eChainring Quantity: \u003c\/strong\u003ex1 by default, x2 compatible with SRAM Spider\u003cbr\u003e\u003cstrong\u003eRecommended Chainring Offset:\u003c\/strong\u003e 3 mm offset for Boost Frames\u003cbr\u003e\u003cstrong\u003eCrank Length:\u003c\/strong\u003e 140, 145, 150, 155, 160, 165, 170, and 175mm length in a single crankset\u003cbr\u003e\u003cstrong\u003eQ-Factor:\u003c\/strong\u003e 180mm\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075 Aluminum construction with 24mm chromoly steel axle\u003cbr\u003e\u003cstrong\u003ePreload System:\u003c\/strong\u003e Aluminum Pre-Load Collar\u003cbr\u003e\u003cstrong\u003eFrame Compatibility:\u003c\/strong\u003e Axle length designed for standard boost frames\u003cbr\u003e\u003cstrong\u003eHardware: \u003c\/strong\u003eGrade 12.9 Fasteners\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 884g without chainring\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat crank lengths are available on the TR8 Adjustable Crankset?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe TR8 allows riders to adjust crank length from 140mm to 175mm in 5mm increments, providing a highly customizable fit for different riding styles and rider sizes.\u003c\/p\u003e\n\u003ch2\u003eWho should use an adjustable crankset?\u003c\/h2\u003e\n\u003cp\u003eThe TR8 is ideal for mountain bikers, trail riders, cross-country racers, growing riders, and cyclists looking to optimize bike fit and pedaling efficiency.\u003c\/p\u003e\n\u003ch2\u003eWhy does crank length matter?\u003c\/h2\u003e\n\u003cp\u003eCrank length affects pedaling mechanics, comfort, power delivery, and bike control. Finding the correct crank length can reduce fatigue and improve overall riding performance.\u003c\/p\u003e\n\u003ch2\u003eIs the TR8 compatible with modern mountain bikes?\u003c\/h2\u003e\n\u003cp\u003eYes. The TR8 is designed for compatibility with modern Boost frame standards and standard 3-bolt direct mount chainrings.\u003c\/p\u003e\n\u003ch2\u003eCan shorter crank lengths help reduce pedal strikes?\u003c\/h2\u003e\n\u003cp\u003eMany riders choose shorter crank lengths to increase ground clearance and reduce pedal strikes when riding technical trails and challenging terrain.\u003c\/p\u003e\n\u003ch2\u003eWhat material is used in the TR8 crankset?\u003c\/h2\u003e\n\u003cp\u003eThe TR8 is precision machined from high-strength 7075 aluminum and designed to deliver exceptional durability for trail, cross-country, and all-mountain riding.\u003cbr\u003e\u003c\/p\u003e","brand":"R Theory Cycleworks","offers":[{"title":"Default Title","offer_id":52854979494072,"sku":"CRK-TR8-AL-R1","price":420.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0877\/2675\/1928\/files\/RTHEORYCYCLEWORKSADJUSTABLELENGTHCRANKSETTR8-1-2.jpg?v=1771189068","url":"https:\/\/www.rtheorycycleworks.com\/products\/tr8-adjustable-length-crankset-cross-country-trail","provider":"R Theory Cycleworks","version":"1.0","type":"link"}